chore(deps): update dependency com.puppycrawl.tools:checkstyle to v10.21.4 (open-feature#1262)

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

Author: renovate[bot]

pom.xml

@@ -411,7 +411,7 @@
                             <dependency>
                                 <groupId>com.puppycrawl.tools</groupId>
                                 <artifactId>checkstyle</artifactId>
-                                <version>10.21.3</version>
+                                <version>10.21.4</version>
                             </dependency>
                         </dependencies>
                         <executions>