Bump checkstyle from 8.37 to 8.38 (#7142)

Bumps [checkstyle](https://github.com/checkstyle/checkstyle) from 8.37 to 8.38.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-8.37...checkstyle-8.38)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -216,7 +216,7 @@ dependencies {
     testImplementation "org.testfx:testfx-junit5:4.0.17-alpha-SNAPSHOT"
     testImplementation "org.hamcrest:hamcrest-library:2.2"
 
-    checkstyle 'com.puppycrawl.tools:checkstyle:8.37'
+    checkstyle 'com.puppycrawl.tools:checkstyle:8.38'
     xjc group: 'org.glassfish.jaxb', name: 'jaxb-xjc', version: '2.3.3'
     jython 'org.python:jython-standalone:2.7.2'
 }