ci: bump actions/checkout from 4 to 5 (#5293)

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](https://github.com/actions/checkout/compare/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>

.github/workflows/build-interop-docker.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ fromJSON(vars['DOCKER_RUNNER_UBUNTU'] || '"ubuntu-latest"') }}
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx

.github/workflows/cross-compile.yml

@@ -9,7 +9,7 @@ jobs:
     name: "Cross Compilation (Go ${{matrix.go}})"
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}

.github/workflows/integration.yml

@@ -32,7 +32,7 @@ jobs:
       TIMESCALE_FACTOR: 3
     name: "Integration (${{ matrix.os }}, Go ${{ matrix.go }}${{ matrix.race && ', race' || '' }}${{ matrix.use32bit && ', 32-bit' || '' }})"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}

.github/workflows/lint.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: "1.25.x"
@@ -42,7 +42,7 @@ jobs:
       GOLANGCI_LINT_VERSION: v2.4.0
     name: golangci-lint (Go ${{ matrix.go }})
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}

.github/workflows/unit.yml

@@ -12,7 +12,7 @@ jobs:
     name: Unit tests (${{ matrix.os}}, Go ${{ matrix.go }})
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}