chore(deps): update actions/checkout action to v4 (#950)

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

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
         OS: ${{ matrix.os }}
         NODE_VERSION: ${{ matrix.node }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: git fetch --prune --unshallow
       - run: git config --global user.name 'Actions'
       - run: git config --global user.email 'dummy@example.org'

.github/workflows/release-please.yml

@@ -14,7 +14,7 @@ jobs:
           release-type: node
           package-name: standard-version
       # The logic below handles the npm publication:
-      - uses: actions/checkout@v2
+      - 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 }}