Bump org.threeten:threetenbp from 1.6.8 to 1.6.9 (#3494)

Bumps [org.threeten:threetenbp](https://github.com/ThreeTen/threetenbp) from 1.6.8 to 1.6.9.
- [Release notes](https://github.com/ThreeTen/threetenbp/releases)
- [Changelog](https://github.com/ThreeTen/threetenbp/blob/main/RELEASE-NOTES.md)
- [Commits](https://github.com/ThreeTen/threetenbp/compare/v1.6.8...v1.6.9)

---
updated-dependencies:
- dependency-name: org.threeten:threetenbp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: Pavel Tupitsyn <ptupitsyn@apache.org>
Co-authored-by: Pavel Tupitsyn <ptupitsyn@apache.org>
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 065571a..5036ef5 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -37,7 +37,7 @@
 okhttp = "4.12.0"
 gson = "2.10.1"
 gsonFire = "1.9.0"
-threetenbp = "1.6.8"
+threetenbp = "1.6.9"
 micronaut = "3.10.3"
 micronautPicocli = "4.4.0"
 micronautJunit5 = "3.9.2"