Bump actions/checkout from 4 to 5

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] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: actions/setup-go@v5
@@ -39,7 +39,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
       # Minimum supported python here.
     - run: echo 'UV_PYTHON=3.9' | tee -a "${GITHUB_ENV}"
@@ -72,7 +72,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: actions/setup-go@v5
@@ -88,7 +88,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: actions/setup-go@v5
@@ -103,7 +103,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: actions/setup-go@v5
@@ -120,7 +120,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: astral-sh/setup-uv@v6
@@ -133,7 +133,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: astral-sh/setup-uv@v6
@@ -147,7 +147,7 @@ jobs:
     name: Build & verify python package
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: hynek/build-and-inspect-python-package@v2
@@ -165,7 +165,7 @@ jobs:
         python-version: ${{ fromJson(needs.build-python.outputs.python-versions) }}
     steps:
       - run: echo 'UV_PYTHON=${{ matrix.python-version }}' | tee -a "${GITHUB_ENV}"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: astral-sh/setup-uv@v6
@@ -181,7 +181,7 @@ jobs:
         python-version: ${{ fromJson(needs.build-python.outputs.python-versions) }}
     steps:
       - run: echo 'UV_PYTHON=${{ matrix.python-version }}' | tee -a "${GITHUB_ENV}"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: astral-sh/setup-uv@v6
@@ -201,7 +201,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: astral-sh/setup-uv@v6