Bump actions/checkout from 4 to 6 (#183)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/dependabot-automerge.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout target branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.base.ref }}
 

.github/workflows/git-repo-sync.yml

@@ -15,7 +15,7 @@ jobs:
     name: Git Repo Sync - BitBucket
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
+      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # 5.0.1
       with:
         fetch-depth: 0
         persist-credentials: false

.github/workflows/publish.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Enable CorePack