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/auto-build-container.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Get latest release of pihole docker container
       id: latest_release

.github/workflows/auto-push-readme.yml

@@ -12,7 +12,7 @@ jobs:
     name: Push README to Docker Hub
     steps:
       - name: git checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: push README to Dockerhub
         uses: christian-korneck/update-container-description-action@v1
         env:

.github/workflows/dev-build.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v3

.github/workflows/force-build-container.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Get latest release of pihole docker container
       id: latest_release