Add change note

Author: hvitved

java/ql/src/change-notes/2025-10-24-request-forgery-matches-sanitizer.md

@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* Calls to `String.matches` are now treated as sanitizers for the `java/ssrf` query.

misc/scripts/create-change-note.py

@@ -7,7 +7,7 @@
 # - What language the change note is for
 # - Whether it's a query or library change (the string `src` or `lib`)
 # - The name of the change note (in kebab-case)
-# - The category of the change.
+# - The category of the change (see https://github.com/github/codeql/blob/main/docs/change-notes.md#change-categories).
 
 # The change note will be created in the `{language}/ql/{subdir}/change-notes` directory, where `subdir` is either `src` or `lib`.