Bump actions/checkout from 1 to 3.1.0

.github/workflows/dep-summaries.yml

@@ -12,14 +12,14 @@ jobs:
     name: Annotate PRs with dependency summary changes
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
       - name: fetch base ref
         id: fetch-base-ref
         uses: ./.github/actions/pr-base-ref
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: checkout base ref
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
         with:
           ref: ${{ steps.fetch-base-ref.outputs.ref }}
           path: libra-base

.github/workflows/hyperjump-comment.yml

@@ -10,7 +10,7 @@ jobs:
     name: (hyperjump) comment
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
       - name: comment
         uses: ./.github/actions/hyperjump-comment
         with:

.github/workflows/hyperjump-labels.yml

@@ -10,7 +10,7 @@ jobs:
     name: (hyperjump) labels
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
       - name: labels
         uses: ./.github/actions/hyperjump-labels
         with:

.github/workflows/land-blocking.yml

@@ -15,7 +15,7 @@ jobs:
     # The additional time can cover the retries and wait.
     timeout-minutes: 50
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3.1.0
       - name: Setup env
         run: |
           echo "::set-env name=LIBRA_GIT_REV::$(git rev-parse --short=8 HEAD)"