chore: upgrade tar to ^7.5.20 to address CVE-2026-59874

Generated with [Linear](https://linear.app/sourcebot/issue/SOU-1554/sourcebot-devsourcebot-cve-2026-59874-tar-node-tar-denial-of-service#agent-session-87c65d74)

Co-authored-by: linear-code[bot] <222613912+linear-code[bot]@users.noreply.github.com>

Author: linear-code[bot]

yarn.lock

@@ -22857,15 +22857,15 @@ __metadata:
   linkType: hard
 
 "tar@npm:^7.4.3":
-  version: 7.5.16
-  resolution: "tar@npm:7.5.16"
+  version: 7.5.20
+  resolution: "tar@npm:7.5.20"
   dependencies:
     "@isaacs/fs-minipass": "npm:^4.0.0"
     chownr: "npm:^3.0.0"
     minipass: "npm:^7.1.2"
     minizlib: "npm:^3.1.0"
     yallist: "npm:^5.0.0"
-  checksum: 10c0/4f37f3c4bd2ca2755fd736a5df1d573c1a868ec1b1e893346aeafa95ac510f9e2fd1469420bd866cc7904799e5bd4ac62b5d4f03fe27747d6e1e373b44505c5c
+  checksum: 10c0/4df4335c6d958b76adf1eaced55889dec3ca1c51f450658a074af80694bb0d9c154a8e93fdf4da617372d1575b121295379993961bbe4cd4b0867c0e5689846a
   languageName: node
   linkType: hard