chore(deps): bump com.diffplug.spotless from 8.1.0 to 8.2.1

Bumps com.diffplug.spotless from 8.1.0 to 8.2.1.

---
updated-dependencies:
- dependency-name: com.diffplug.spotless
  dependency-version: 8.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -5,7 +5,7 @@ plugins {
 	id 'eclipse'
 	id 'pmd'
 
-	id 'com.diffplug.spotless' version '8.1.0'
+	id 'com.diffplug.spotless' version '8.2.1'
 
 	/* We have to use this 3rd party plugin for publishing to MavenCentral because as of AUG-2025 there is no official
 	 * plugin which supports publishing to MavenCentral Portal. */