Bump checkstyle from 10.2 to 10.3 (#3015)

diff --git a/pom.xml b/pom.xml
index 85f58b4..0b5afc4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -61,7 +61,7 @@
     <maven-jar-plugin.version>3.2.2</maven-jar-plugin.version>
     <maven-project-info-reports-plugin.version>3.3.0</maven-project-info-reports-plugin.version>
     <maven-remote-resources-plugin.version>1.7.0</maven-remote-resources-plugin.version>
-    <puppycrawl-checkstyle.version>10.2</puppycrawl-checkstyle.version>
+    <puppycrawl-checkstyle.version>10.3</puppycrawl-checkstyle.version>
     <release-maven-plugin.version>2.5.3</release-maven-plugin.version>
     <site-maven-plugin.version>3.12.0</site-maven-plugin.version>
     <source-maven-plugin.version>3.2.1</source-maven-plugin.version>