ci: add workflow_dispatch trigger to CodeQL workflow (#766)

Allows manually triggering CodeQL analysis on specific refs (e.g., release
tags) to satisfy SBOM tooling that requires a CodeQL SARIF report for the
exact commit SHA of a published package version.

Author: ivandevp

.github/workflows/codeql.yml

@@ -9,6 +9,7 @@ on:
       - main
   schedule:
     - cron: "30 14 * * 4"
+  workflow_dispatch:
 
 jobs:
   analyze: