Bump actions/checkout from 3 to 4

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]>

.github/workflows/bazel.yml

@@ -11,7 +11,7 @@ jobs:
         with:
           path: "/home/runner/.cache/bazel"
           key: bazel
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run Bazel tests
         run: bazel test ...:all --test_output=all --action_env=WGKEX_CONFIG_FILE=`pwd`/wgkex.yaml.example
       - name: Python coverage

.github/workflows/black.yml

@@ -6,6 +6,6 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
       - uses: psf/black@stable

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v2
       - name: Setup Docker buildx

.github/workflows/docker.yml

@@ -19,7 +19,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
         with:

.github/workflows/pylint.yml

@@ -5,7 +5,7 @@ jobs:
     name: GitHub Action for pylint
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: GitHub Action for pylint
       uses: cclauss/GitHub-Action-for-pylint@master
       with: