Bump com.puppycrawl.tools:checkstyle from 11.1.0 to 12.0.1

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 11.1.0 to 12.0.1.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-11.1.0...checkstyle-12.0.1)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-version: 12.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

assertj-mail/pom.xml

@@ -151,7 +151,7 @@
             <dependency>
               <groupId>com.puppycrawl.tools</groupId>
               <artifactId>checkstyle</artifactId>
-              <version>11.1.0</version>
+              <version>12.0.1</version>
             </dependency>
           </dependencies>
         </plugin>

pom.xml

@@ -68,7 +68,7 @@
             <dependency>
               <groupId>com.puppycrawl.tools</groupId>
               <artifactId>checkstyle</artifactId>
-              <version>11.1.0</version>
+              <version>12.0.1</version>
             </dependency>
           </dependencies>
         </plugin>