Update checkstyle

Author: thomasturrell

pom.xml

@@ -17,10 +17,10 @@
   <properties>
     <java.version>25</java.version>
     <jacoco-maven-plugin.version>0.8.14</jacoco-maven-plugin.version>
-    <maven-checkstyle-plugin.version>3.5.0</maven-checkstyle-plugin.version>
-    <checkstyle.version>10.6.0</checkstyle.version>
+    <maven-checkstyle-plugin.version>3.6.0</maven-checkstyle-plugin.version>
+    <checkstyle.version>12.1.2</checkstyle.version>
     <lifecycle-mapping.version>1.0.0</lifecycle-mapping.version>
-    <jjwt.version>0.12.6</jjwt.version>
+    <jjwt.version>0.13.0</jjwt.version>
     <okhttp.version>5.3.2</okhttp.version>
   </properties>
   <organization>
@@ -91,6 +91,13 @@
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>
           <version>${maven-checkstyle-plugin.version}</version>
+          <dependencies>
+            <dependency>
+              <groupId>com.puppycrawl.tools</groupId>
+              <artifactId>checkstyle</artifactId>
+              <version>${checkstyle.version}</version>
+            </dependency>
+          </dependencies>           
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>