Add Guzzle psr7 fix references

Author: cookesan

advisories/github-reviewed/2026/06/GHSA-vm85-hxw5-5432/GHSA-vm85-hxw5-5432.json

@@ -43,6 +43,18 @@
     {
       "type": "PACKAGE",
       "url": "https://github.com/guzzle/psr7"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/guzzle/psr7/pull/798"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/guzzle/psr7/commit/f3f94b4d344fa9788afb9558ac032923a9767380"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/guzzle/psr7/releases/tag/2.12.1"
     }
   ],
   "database_specific": {