Update dependency com.puppycrawl.tools:checkstyle to v10.21.2 (#39)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -64,7 +64,7 @@
 
         <!-- Dependency versions -->
         <lib.assertj.version>3.27.3</lib.assertj.version>
-        <lib.checkstyle.version>10.21.1</lib.checkstyle.version>
+        <lib.checkstyle.version>10.21.2</lib.checkstyle.version>
         <lib.datanucleus-api-jdo.version>6.0.4</lib.datanucleus-api-jdo.version>
         <lib.datanucleus-core.version>6.0.10</lib.datanucleus-core.version>
         <lib.datanucleus-javax-jdo.version>3.2.1</lib.datanucleus-javax-jdo.version>