chore(ci): Fix source repo url for notification (cube-js#9612)

Author: KSDaemon

.github/workflows/master.yml

@@ -155,7 +155,7 @@ jobs:
               ref: 'main',
               inputs: {
                 'cube-image': 'cubejs/cube:dev',
-                'source-repo': context.repo.repo,
+                'source-repo': `${context.repo.owner}/${context.repo.repo}`,
                 'source-pr-url': prUrl,
                 'source-commit-url': commitUrl,
                 'initiator': '${{ github.actor }}'