Upgrade CodeQL action from v3 to v4

Author: rossigee

.github/workflows/ci.yml

@@ -102,7 +102,7 @@ jobs:
         args: '-no-fail -fmt sarif -out results.sarif ./...'
 
     - name: Upload SARIF file
-      uses: github/codeql-action/upload-sarif@v3
+      uses: github/codeql-action/upload-sarif@v4
       with:
         sarif_file: results.sarif
       continue-on-error: true