build(deps): bump third_party/cctz from `5417654` to `83ffd88` (#2051)

Bumps [third_party/cctz](https://github.com/google/cctz) from `5417654` to `83ffd88`.
- [Release notes](https://github.com/google/cctz/releases)
- [Commits](https://github.com/google/cctz/compare/5417654582642359a597b273bacaaedcc99f758f...83ffd88d7c9a48d1dc61f04cb649cd52966d2fff)

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

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

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 5417654..83ffd88 160000
--- a/third_party/cctz
+++ b/third_party/cctz
@@ -1 +1 @@
-Subproject commit 5417654582642359a597b273bacaaedcc99f758f
+Subproject commit 83ffd88d7c9a48d1dc61f04cb649cd52966d2fff