Bump ssh-agent version (feast-dev#1175)

Signed-off-by: Terence <[email protected]>

Author: terryyylim

.github/workflows/mirror.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: webfactory/[email protected].0
+      - uses: webfactory/[email protected].1
         with:
           ssh-private-key: ${{ secrets.MIRROR_SSH_KEY }}
       - name: Mirror all origin branches and tags to internal repo