fix: allow manual workflow_dispatch to trigger deployment

Author: cfsmp3

.github/workflows/sp-deployment-pipeline.yml

@@ -16,7 +16,7 @@ env:
 jobs:
   deploy:
     runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    if: ${{ github.event_name == 'workflow_dispatch' || github.event.workflow_run.conclusion == 'success' }}
     permissions:
       id-token: write
       contents: read