Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](https://github.com/actions/checkout/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/memory-safety.yml

@@ -31,7 +31,7 @@ jobs:
       ASAN_OPTIONS: "detect_leaks=1:halt_on_error=0:print_stats=1:log_path=/tmp/asan"
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v6
@@ -121,7 +121,7 @@ jobs:
       UBSAN_OPTIONS: "print_stacktrace=1:halt_on_error=0:log_path=/tmp/ubsan"
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6.0.3
+        uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v6