chore(deps): update actions/checkout action to v4 (#107)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/nodejs-test.yml

@@ -13,7 +13,7 @@ jobs:
         node: [10.x, 12.x, 14.x]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v3
       with:

.github/workflows/release-please.yml

@@ -13,7 +13,7 @@ jobs:
           release-type: node
           package-name: test-release-please
       # The logic below handles the npm publication:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         # these if statements ensure that a publication only occurs when
         # a new release is created:
         if: ${{ steps.release.outputs.release_created }}