ci: adds workflow dispatch to codeql workflow

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

.github/workflows/codeql-analysis.yml

@@ -6,6 +6,7 @@ on:
   pull_request:
   schedule:
     - cron: '0 8 * * *'
+  workflow_dispatch:
 
 permissions:
   contents: read # these permissions are required to run the codeql analysis