ci(docs): Add step to kill ssh-agent in build-deploy-docs.yml (#321)

Author: ValerianRey

.github/workflows/build-deploy-docs.yml

@@ -50,6 +50,10 @@ jobs:
           external_repository: TorchJD/documentation
           publish_branch: main
 
+      - name: Kill ssh-agent
+        # See: https://github.com/peaceiris/actions-gh-pages/issues/909
+        run: killall ssh-agent
+
       - name: Deploy to stable of TorchJD/documentation
         if: startsWith(github.ref, 'refs/tags/')
         uses: peaceiris/actions-gh-pages@v4