build(deps): bump third_party/cctz from `5b5c77d` to `4f25782` (#2392)

Bumps [third_party/cctz](https://github.com/google/cctz) from `5b5c77d` to `4f25782`.
- [Release notes](https://github.com/google/cctz/releases)
- [Commits](https://github.com/google/cctz/compare/5b5c77df48fdffb60e492a159d03a05203d820e2...4f2578218c598f075a19245be842e69a1865a929)

---
updated-dependencies:
- dependency-name: third_party/cctz
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/third_party/cctz b/third_party/cctz
index 5b5c77d..4f25782 160000
--- a/third_party/cctz
+++ b/third_party/cctz
@@ -1 +1 @@
-Subproject commit 5b5c77df48fdffb60e492a159d03a05203d820e2
+Subproject commit 4f2578218c598f075a19245be842e69a1865a929