build: add workflow_dispatch to CodeQL and spectral-checks workflows

Author: milkshakeuk

.github/workflows/fast-forward-pr-merge-privileged.yml

@@ -300,7 +300,6 @@ jobs:
         run: |
           echo "Triggering 'Standard CI' workflows"
           gh workflow run codeql.yml --ref main
-          gh workflow run lint-commit-msg.yml --ref main
 
       # Post a failure message when any of the previous steps fail.
       - name: Add failure comment to PR

.github/workflows/spectral-checks.yml

@@ -1,6 +1,7 @@
 name: Spectral Checks
 
 on:
+  workflow_dispatch:
   pull_request:
   push:
     paths: