⬆️ Bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build-test.yml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Save supported versions as output
         id: set-matrix
@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Save branch name as env var
         run: echo "BRANCH=${GITHUB_REF##*/}" >> $GITHUB_ENV
@@ -81,7 +81,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Save branch name as env var
         run: echo "BRANCH=${GITHUB_REF##*/}" >> $GITHUB_ENV

.github/workflows/dockerhub-description.yml

@@ -13,7 +13,7 @@ jobs:
   dockerHubDescription:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Update Docker Hub Description
       uses: peter-evans/dockerhub-description@v4

.github/workflows/lint-dockerfile.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Lint Dockerfile
         uses: brpaz/hadolint-action@v1.5.0

.github/workflows/push-latest.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Retrieve latest suported versions
         run: |

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Save supported versions as output
         id: set-matrix
@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Get and save release tag
         run: echo "RELEASE_TAG=${GITHUB_REF##*/}" >> $GITHUB_ENV