Bump com.diffplug.spotless:spotless-maven-plugin in /lang/java (#3289)

Author: dependabot[bot]

pom.xml

@@ -62,7 +62,7 @@
     <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
     <maven-toolchains-plugin.version>3.2.0</maven-toolchains-plugin.version>
     <plugin-tools-javadoc.version>3.5.2</plugin-tools-javadoc.version>
-    <spotless-maven-plugin.version>2.43.0</spotless-maven-plugin.version>
+    <spotless-maven-plugin.version>2.44.1</spotless-maven-plugin.version>
     <maven-surefire-plugin.version>3.5.2</maven-surefire-plugin.version>
 
     <!-- Pin output timestamp to make the Java build reproducible -->