Bump joda-time:joda-time from 2.10.2 to 2.12.7

Bumps [joda-time:joda-time](https://github.com/JodaOrg/joda-time) from 2.10.2 to 2.12.7.
- [Release notes](https://github.com/JodaOrg/joda-time/releases)
- [Changelog](https://github.com/JodaOrg/joda-time/blob/main/RELEASE-NOTES.txt)
- [Commits](JodaOrg/joda-time@v2.10.2...v2.12.7)

---
updated-dependencies:
- dependency-name: joda-time:joda-time
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 
 embulk-util-rubytime = "0.3.3"
 
-joda-time = "2.10.2"
+joda-time = "2.12.7"
 
 junit5 = "5.9.2"