ruby: adjust change notes

Author: yoff

ruby/ql/src/change-notes/2025-04-02-adjust-uninitialized-local-alert-message.md

@@ -1,4 +1,4 @@
 ---
-category: minorAnalysis
+category: majorAnalysis
 ---
-* The query `rb/uninitialized-local-variable` now take various guards into account and should produce fewer false positives. It also now comes with a help file.
+* The query `rb/uninitialized-local-variable` now only produces alerts when the variable is the receiver of a method call and should produce very few false positives. It also now comes with a help file.

ruby/ql/src/change-notes/2025-04-02-adjust-uninitialized-local-metadata.md

@@ -1,4 +1,4 @@
 ---
 category: queryMetadata
 ---
-* The query `rb/uninitialized-local-variable` now only produces alerts when it can find local flow; we have adjusted the precision to 'medium'.
+* The query `rb/uninitialized-local-variable` now only produces alerts when the variable is the receiver of a method call; we have adjusted the precision to 'high'.

ruby/ql/src/queries/variables/UninitializedLocal.ql

@@ -8,7 +8,7 @@
  * @tags quality
  *       reliability
  *       correctness
- * @precision medium
+ * @precision high
  */
 
 import codeql.ruby.AST