Bump com.puppycrawl.tools:checkstyle from 8.+ to 10.12.5

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 8.+ to 10.12.5.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](https://github.com/checkstyle/checkstyle/commits/checkstyle-10.12.5)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -12,7 +12,7 @@ autoservice = "com.google.auto.service:auto-service:1.+"
 bndlib = "biz.aQute.bnd:bndlib:2.+"
 checker-annotations = { module = "org.checkerframework:checker-qual", version.ref = "checker" }
 checker-core = { module = "org.checkerframework:checker", version.ref = "checker" }
-checkstyle = "com.puppycrawl.tools:checkstyle:8.+"
+checkstyle = "com.puppycrawl.tools:checkstyle:10.+"
 commons-io = "commons-io:commons-io:2.+"
 commons-lang = { module = "org.apache.commons:commons-lang3" }
 compile-testing = "com.google.testing.compile:compile-testing:0.+"