diff --git a/yarn.lock b/yarn.lock
index c460d67..d29b97d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1459,9 +1459,9 @@ ajv-keywords@^3.1.0, ajv-keywords@^3.4.1:
   integrity sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ==
 
 ajv@^6.1.0, ajv@^6.10.0, ajv@^6.10.2, ajv@^6.5.5:
-  version "6.12.0"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.0.tgz#06d60b96d87b8454a5adaba86e7854da629db4b7"
-  integrity sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
   dependencies:
     fast-deep-equal "^3.1.1"
     fast-json-stable-stringify "^2.0.0"
@@ -2793,6 +2793,13 @@ eslint-module-utils@^2.4.1:
     debug "^2.6.9"
     pkg-dir "^2.0.0"
 
+eslint-plugin-flowtype@^4.7.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-flowtype/-/eslint-plugin-flowtype-4.7.0.tgz#903a6ea3eb5cbf4c7ba7fa73cc43fc39ab7e4a70"
+  integrity sha512-M+hxhSCk5QBEValO5/UqrS4UunT+MgplIJK5wA1sCtXjzBcZkpTGRwxmLHhGpbHcrmQecgt6ZL/KDdXWqGB7VA==
+  dependencies:
+    lodash "^4.17.15"
+
 eslint-plugin-import@^2.18.2:
   version "2.20.1"
   resolved "https://registry.yarnpkg.com/eslint-plugin-import/-/eslint-plugin-import-2.20.1.tgz#802423196dcb11d9ce8435a5fc02a6d3b46939b3"
@@ -3089,9 +3096,9 @@ extsprintf@^1.2.0:
   integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
 
 fast-deep-equal@^3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz#545145077c501491e33b15ec408c294376e94ae4"
-  integrity sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
 
 fast-json-stable-stringify@^2.0.0:
   version "2.1.0"
@@ -4458,7 +4465,7 @@ loader-runner@^2.4.0:
   resolved "https://registry.yarnpkg.com/loader-runner/-/loader-runner-2.4.0.tgz#ed47066bfe534d7e84c4c7b9998c2a75607d9357"
   integrity sha512-Jsmr89RcXGIwivFY21FcRrisYZfvLMTWx5kOLc+JTxtpBOG6xML0vzbc6SEQG2FO9/4Fc3wW4LVcB5DmGflaRw==
 
-loader-utils@^1.0.0, loader-utils@^1.2.3:
+loader-utils@^1.2.3:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-1.4.0.tgz#c579b5e34cb34b1a74edc6c1fb36bfa371d5a613"
   integrity sha512-qH0WSMBtn/oHuwjy/NucEgbx5dbxxnxup9s4PVXJUDHZBQY+s0NWA9rJf53RBnQZxfch7euUui7hpoAPvALZdA==
@@ -4805,11 +4812,6 @@ nice-try@^1.0.4:
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
   integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
 
-node-ensure@^0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/node-ensure/-/node-ensure-0.0.0.tgz#ecae764150de99861ec5c810fd5d096b183932a7"
-  integrity sha1-7K52QVDemYYexcgQ/V0Jaxg5Mqc=
-
 node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
@@ -5222,13 +5224,10 @@ pbkdf2@^3.0.3:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
-pdfjs-dist@2.3.200:
-  version "2.3.200"
-  resolved "https://registry.yarnpkg.com/pdfjs-dist/-/pdfjs-dist-2.3.200.tgz#2920dc28ae7f2b8313cd6d6223c97ae85ac07eac"
-  integrity sha512-+8wBjU5h8LPZOIvR9X2uCrp/8xWQG1DRDKMLg5lzGN1qyIAZlYUxA0KQyy12Nw5jN7ozulC6v97PMaDcLgAcFg==
-  dependencies:
-    node-ensure "^0.0.0"
-    worker-loader "^2.0.0"
+pdfjs-dist@^2.4.456:
+  version "2.12.313"
+  resolved "https://registry.yarnpkg.com/pdfjs-dist/-/pdfjs-dist-2.12.313.tgz#62f2273737bb956267ae2e02cdfaddcb1099819c"
+  integrity sha512-1x6iXO4Qnv6Eb+YFdN5JdUzt4pAkxSp3aLAYPX93eQCyg/m7QFzXVWJHJVtoW48CI8HCXju4dSkhQZwoheL5mA==
 
 performance-now@^2.1.0:
   version "2.1.0"
@@ -5859,14 +5858,6 @@ scheduler@^0.19.0:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
 
-schema-utils@^0.4.0:
-  version "0.4.7"
-  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.4.7.tgz#ba74f597d2be2ea880131746ee17d0a093c68187"
-  integrity sha512-v/iwU6wvwGK8HbU9yi3/nhGzP0yGSuhQMzL6ySiec1FSrZZDkhm4noOSWzrNFo/jEc+SJY6jRTwuwbSXJPDUnQ==
-  dependencies:
-    ajv "^6.1.0"
-    ajv-keywords "^3.1.0"
-
 schema-utils@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-1.0.0.tgz#0b79a93204d7b600d4b2850d1f66c2a34951c770"
@@ -6603,9 +6594,9 @@ upath@^1.1.1:
   integrity sha512-aZwGpamFO61g3OlfT7OQCHqhGnW43ieH9WZeP7QxN/G/jS4jfqUkZxoryvJgVPEcrl5NL/ggHsSmLMHuH64Lhg==
 
 uri-js@^4.2.2:
-  version "4.2.2"
-  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
-  integrity sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
+  integrity sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==
   dependencies:
     punycode "^2.1.0"
 
@@ -6823,14 +6814,6 @@ worker-farm@^1.7.0:
   dependencies:
     errno "~0.1.7"
 
-worker-loader@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/worker-loader/-/worker-loader-2.0.0.tgz#45fda3ef76aca815771a89107399ee4119b430ac"
-  integrity sha512-tnvNp4K3KQOpfRnD20m8xltE3eWh89Ye+5oj7wXEEHKac1P4oZ6p9oTj8/8ExqoSBnk9nu5Pr4nKfQ1hn2APJw==
-  dependencies:
-    loader-utils "^1.0.0"
-    schema-utils "^0.4.0"
-
 wrap-ansi@^6.2.0:
   version "6.2.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-6.2.0.tgz#e9393ba07102e6c91a3b221478f0257cd2856e53"