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] <support@github.com>

Author: dependabot[bot]

.github/workflows/dispatch-release.yaml

@@ -44,7 +44,7 @@ jobs:
           echo "branch=${BRANCH}" >>"${GITHUB_OUTPUT}"
 
       - name: 'Checkout repo'
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
         with:
           repository: 'OXID-eSales/github-actions'
           ref: '${{ steps.branch.outputs.branch }}'

.github/workflows/merge-release.yaml

@@ -35,7 +35,7 @@ jobs:
 
       - name: 'Checkout repo'
         if: ${{ steps.data.outputs.skip != 'true' }}
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
         with:
           repository: 'OXID-eSales/github-actions'
           ref: 'main'

.github/workflows/push-validate_workflows.yaml

@@ -36,7 +36,7 @@ jobs:
     steps:
       - name: 'Checkout'
         id: checkout
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
 
       - name: 'Lint yaml files'
         id: yamllint
@@ -76,7 +76,7 @@ jobs:
     steps:
       - name: 'Checkout'
         id: checkout
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
 
       - name: 'Run actionlint'
         id: actionlint

.github/workflows/universal_workflow_light.yaml

@@ -72,15 +72,15 @@ jobs:
     runs-on: ${{ fromJSON(inputs.runs_on) }}
     steps:
       - name: 'Checkout testplan defaults'
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
         with:
           repository: 'OXID-eSales/github-actions'
           ref: '${{ inputs.defaults }}'
           path: 'defaults'
           sparse-checkout: '${{ inputs.default_plan_folder }}'
 
       - name: 'Checkout testplans'
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
         with:
           sparse-checkout: |
             ${{ inputs.plan_folder}}
@@ -1147,7 +1147,7 @@ jobs:
 
       - name: 'Checkout shop'
         if: ${{ env.SONAR_TOKEN != '' }}
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
         with:
           fetch-depth: 0
           repository: '${{ steps.sonarcloud_testplan.outputs.sonarcloud_git_repository }}'
@@ -1204,7 +1204,7 @@ jobs:
     steps:
       - name: 'Checkout'
         id: checkout
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
 
       - name: 'Lint yaml files'
         id: yamllint
@@ -1281,7 +1281,7 @@ jobs:
           debug: ${{ inputs.debug }}
 
       - name: 'Checkout the repo for cleanup'
-        uses: 'actions/checkout@v5'
+        uses: 'actions/checkout@v6'
         with:
           path: repo