chore(deps): update dependency com.puppycrawl.tools:checkstyle to v12 (open-feature#1649)

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

Author: renovate[bot]

pom.xml

@@ -415,7 +415,7 @@
                             <dependency>
                                 <groupId>com.puppycrawl.tools</groupId>
                                 <artifactId>checkstyle</artifactId>
-                                <version>11.1.0</version>
+                                <version>12.1.2</version>
                             </dependency>
                         </dependencies>
                         <executions>