build(deps-dev): bump com.diffplug.spotless:spotless-maven-plugin from 3.4.0 to 3.5.1 (#406)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -386,7 +386,7 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>3.4.0</version>
+                <version>3.5.1</version>
                 <configuration>
                     <java>
                         <removeUnusedImports />