Bump actions/checkout from 4 to 6 (#103)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/check_for_updates.yml

@@ -28,7 +28,7 @@ jobs:
       any_update_needed: ${{ steps.needs_update.outputs.any }}
     steps:
       - name: Checkout Full Repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           path: full_repo
@@ -93,7 +93,7 @@ jobs:
           echo "prerelease=$prerelease" >> $GITHUB_OUTPUT
 
       - name: Checkout last build branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: build/last-build-versions
           path: build_versions
@@ -176,7 +176,7 @@ jobs:
 
     steps:
       - name: Checkout Full Repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: full_repo
 
@@ -198,7 +198,7 @@ jobs:
 
     steps:
       - name: Checkout last build branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: build/last-build-versions
           path: build_versions

.github/workflows/run_tests.yml

@@ -117,7 +117,7 @@ jobs:
     steps:
       - name: "Check out the repo"
         if: ${{ inputs.no-checkout != 'true' }}
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: project