chore(ci): upgrade CodeQL action from v3 to v4 (#378)

Address deprecation warning: CodeQL Action v3 will be deprecated
in December 2026.

Refs: #377
Closes: #377

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: mcj-coder

.github/workflows/ci.yml

@@ -86,9 +86,9 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@v4
         with:
           languages: javascript
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@v4