chore(deps): update actions/checkout action to v3 (#1392) (#473)

Co-authored-by: Jeffrey Rennie <[email protected]>
Source-Link: googleapis/synthtool@9368bc7
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:f74e740638e66be7ced1540626217dbb72980eb73885b2339a70592f38c9ff2c

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:1d25dfefd805b689a2a2356d35a25b13f2f67bcce55400246432c43a42e96214
-# created: 2022-04-05T22:42:50.409517925Z
+  digest: sha256:f74e740638e66be7ced1540626217dbb72980eb73885b2339a70592f38c9ff2c
+# created: 2022-04-06T18:36:33.987617127Z

.github/workflows/ci.yaml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         node: [10, 12, 14, 16]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
@@ -29,7 +29,7 @@ jobs:
   windows:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
           node-version: 14
@@ -40,7 +40,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
           node-version: 14
@@ -49,7 +49,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
           node-version: 14