fix uses

Author: kkartunov

.github/workflows/tc_agent.yml

@@ -17,6 +17,6 @@ jobs:
         uses: actions/checkout@v3
 
       - name: TC Action Agent
-        uses: topcoder-platform/tc-action-agent
+        uses: topcoder-platform/tc-action-agent@master
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # The GITHUB_TOKEN is there by default so you just need to keep it like it is and not necessarily need to add it as secret as it will throw an error. [More Details](https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret)