Bump com.puppycrawl.tools:checkstyle from 10.12.2 to 10.12.3 (#664)

Author: dependabot[bot]

pom.xml

@@ -66,7 +66,7 @@
     <surefire.plugin.version>3.1.2</surefire.plugin.version>
 
     <!-- tooling -->
-    <checkstyle.tool.version>10.12.2</checkstyle.tool.version>
+    <checkstyle.tool.version>10.12.3</checkstyle.tool.version>
 
     <!-- testing -->
     <awaitility.version>4.2.0</awaitility.version>