chore(deps): bump actions/checkout in the github-actions group

Bumps the github-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `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
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/_ci.yml

@@ -17,15 +17,15 @@ jobs:
     outputs:
       rust-version: ${{ steps.rust-version.outputs.RUST_VERSION }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Get rust version from .tool-versions
       id: rust-version
       run: echo "RUST_VERSION=$(grep '^rust ' .tool-versions | awk '{print $2}')" >> $GITHUB_OUTPUT
   deny:
     needs: get-rust-version
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ needs.get-rust-version.outputs.rust-version }}
@@ -38,7 +38,7 @@ jobs:
     needs: get-rust-version
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ needs.get-rust-version.outputs.rust-version }}
@@ -66,7 +66,7 @@ jobs:
           binary_name: gitopolis
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ needs.get-rust-version.outputs.rust-version }}

.github/workflows/_release.yml

@@ -20,7 +20,7 @@ jobs:
     permissions:
       contents: write
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0