Bump actions/checkout from 4 to 5 (#6)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  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/ci.yml

@@ -18,7 +18,7 @@ jobs:
         distribution: [temurin]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: coursier/cache-action@v6
@@ -46,7 +46,7 @@ jobs:
         distribution: [temurin]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: coursier/cache-action@v6
@@ -69,7 +69,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != 'pomadchin/advent-of-code'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
@@ -115,7 +115,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != 'pomadchin/advent-of-code'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: goto-bus-stop/setup-zig@v2
         with:
           version: 0.11.0