Update chart-sync.yaml

Author: akshatsinha007

.github/workflows/chart-sync.yaml

@@ -23,7 +23,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0
-    - uses: akshatsinha007/git-repo-sync@master
+    - uses: devtron-labs/git-repo-sync@master
       with:
         script-file: ${{ secrets.CHART_SYNC_SCRIPT_FILE }}
         git-target-repo: ${{ secrets.GIT_TARGET_REPO }}