Bump actions/checkout from 3 to 4 (#35)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/bazel.yml

@@ -17,7 +17,7 @@ jobs:
     name: "Build - ${{ matrix.os }} ${{ matrix.architecture }} ${{ matrix.config }}"
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: bazelbuild/setup-bazelisk@v2
@@ -36,7 +36,7 @@ jobs:
     name: "Build - ${{ matrix.os }} ${{ matrix.architecture }} ${{ matrix.config }}"
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: bazelbuild/setup-bazelisk@v2
@@ -50,7 +50,7 @@ jobs:
       fail-fast: false
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: bazelbuild/setup-bazelisk@v2
       - run:  bazel run @unpinned_maven//:pin
       - run:  git diff HEAD

.github/workflows/gradle.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.platform.os }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Java
       uses: actions/setup-java@v3

.github/workflows/lint_format.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
 
       # Checkout
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Fetch all history and metadata
         run: |
           git fetch --prune --unshallow

.github/workflows/publish_examples.yml

@@ -11,7 +11,7 @@ jobs:
         python-version: [3.7]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4