Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/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
...

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

Author: dependabot[bot]

.github/workflows/build-and-test.yml

@@ -36,7 +36,7 @@ jobs:
         run: sudo apt purge postgresql* libpq*
 
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
           ref: ${{ github.ref }}

.github/workflows/check.yml

@@ -15,14 +15,14 @@ jobs:
         run: sudo apt purge postgresql* libpq*
 
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
           path: src
           ref: ${{ github.ref }}
 
       - name: Clone postgres repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: postgres
           repository: percona/postgres.git

.github/workflows/coverage.yml

@@ -22,7 +22,7 @@ jobs:
         run: sudo apt purge postgresql* libpq*
 
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
           ref: ${{ github.ref }}

.github/workflows/sanitizers.yml

@@ -27,13 +27,13 @@ jobs:
         run: sudo apt purge postgresql* libpq*
 
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: src
           submodules: recursive
 
       - name: Clone postgres repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: postgres
           repository: percona/postgres.git