build(deps): bump the github-actions group with 3 updates

Bumps the github-actions group with 3 updates: [DavidAnson/markdownlint-cli2-action](https://github.com/davidanson/markdownlint-cli2-action), [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) and [actions/cache](https://github.com/actions/cache).


Updates `DavidAnson/markdownlint-cli2-action` from 21 to 22
- [Release notes](https://github.com/davidanson/markdownlint-cli2-action/releases)
- [Commits](https://github.com/davidanson/markdownlint-cli2-action/compare/v21...v22)

Updates `peter-evans/create-pull-request` from 7 to 8
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](https://github.com/peter-evans/create-pull-request/compare/v7...v8)

Updates `actions/cache` from 4 to 5
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v4...v5)

---
updated-dependencies:
- dependency-name: DavidAnson/markdownlint-cli2-action
  dependency-version: '22'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: peter-evans/create-pull-request
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

test/integration-test/src/tests/ring_buf.rs

@@ -231,18 +231,14 @@ async fn ring_buf_async_with_drops() {
     // Make sure that there is nothing else in the ring_buf.
     assert_matches!(async_fd.into_inner().next(), None);
 
-    let max_dropped: u64 = u64::try_from(
-        data.len()
-            .checked_sub(RING_BUF_MAX_ENTRIES - 1)
-            .unwrap_or_default(),
-    )
-    .unwrap();
+    let max_dropped: u64 =
+        u64::try_from(data.len().saturating_sub(RING_BUF_MAX_ENTRIES - 1)).unwrap();
     let max_seen = u64::try_from(data.iter().filter(|v| *v % 2 == 0).count()).unwrap();
     let max_rejected = u64::try_from(data.len()).unwrap() - max_seen;
     let Registers { dropped, rejected } = regs.get(&0, 0).unwrap().iter().sum();
     let total = u64::try_from(data.len()).unwrap();
-    let min_seen = max_seen.checked_sub(max_dropped).unwrap_or_default();
-    let min_rejected = max_rejected.checked_sub(dropped).unwrap_or_default();
+    let min_seen = max_seen.saturating_sub(max_dropped);
+    let min_rejected = max_rejected.saturating_sub(dropped);
     let facts = format!(
         "seen={seen}, rejected={rejected}, dropped={dropped}, total={total}, max_seen={max_seen}, \
         max_rejected={max_rejected}, max_dropped={max_dropped}",