Bump com.puppycrawl.tools:checkstyle from 10.14.2 to 10.15.0

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 10.14.2 to 10.15.0.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-10.14.2...checkstyle-10.15.0)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -7,7 +7,7 @@ plugins {
 }
 
 ext {
-    checkstyleVersion = '10.14.2'
+    checkstyleVersion = '10.15.0'
 }
 
 def properties(String key) {