Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/codeql-analysis.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/docker.yml

@@ -20,7 +20,7 @@ jobs:
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
-     - uses: actions/checkout@v2
+     - uses: actions/checkout@v4
      -
        name: Build and push logproxy-filter-drop
        uses: docker/build-push-action@v2

.github/workflows/docker_tagged.yml

@@ -30,7 +30,7 @@ jobs:
           password: ${{ secrets.HSDP_DOCKER_PASSWORD }}
       -
         name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           # We must fetch at least the immediate parents so that if this is
           # a pull request then we can checkout the head.