Bump com.diffplug.spotless:spotless-maven-plugin from 2.46.1 to 3.2.0

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 2.46.1 to 3.2.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@maven/2.46.1...lib/3.2.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-maven-plugin
  dependency-version: 3.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -80,7 +80,7 @@
     <maven.surefire.plugin.version>3.5.4</maven.surefire.plugin.version>
     <jetty.server.version>9.4.50.v20221201</jetty.server.version>
     <saxon.version>9.1.0.8</saxon.version>
-    <spotless.version>2.46.1</spotless.version>
+    <spotless.version>3.2.0</spotless.version>
     <!-- Eclipse Java formatter version 4.26+ does not check test files -->
     <spotless.eclipse.version>4.25</spotless.eclipse.version>
     <spotless.eclipse.wtp.version>4.21.0</spotless.eclipse.wtp.version>