CodeQL: Run alert-suppression query

Author: amotl

.github/workflows/codeql.yml

@@ -53,6 +53,8 @@ jobs:
           languages: ${{ matrix.language }}
           config-file: ./.github/codeql.yml
           queries: +security-and-quality
+          # run an 'alert-suppression' query
+          packs: "codeql/${{ matrix.language }}-queries:AlertSuppression.ql"
 
       #- name: Autobuild
       #  uses: github/codeql-action/autobuild@v2