chore(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...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] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install go
         uses: actions/setup-go@v6
@@ -47,7 +47,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check GoReleaser
         uses: goreleaser/goreleaser-action@v6

.github/workflows/release.yaml

@@ -23,7 +23,7 @@ jobs:
       SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_TOKEN }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # Allow goreleaser to access older tag information.
           fetch-depth: 0
@@ -106,7 +106,7 @@ jobs:
       AWS_SECRET_ACCESS_KEY: ${{ secrets.OBJECT_STORAGE_SECRET_ACCESS_KEY }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # use the artifacts from the "goreleaser" job
       - name: Download artifacts from workflow
@@ -144,7 +144,7 @@ jobs:
       AWS_ENDPOINT_URL: https://object.storage.eu01.onstackit.cloud
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download artifacts from workflow
         uses: actions/download-artifact@v6

.github/workflows/renovate.yaml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Self-hosted Renovate
         uses: renovatebot/[email protected]
         with: