build(deps): bump com.diffplug.spotless from 7.0.4 to 7.2.1

Bumps com.diffplug.spotless from 7.0.4 to 7.2.1.

---
updated-dependencies:
- dependency-name: com.diffplug.spotless
  dependency-version: 7.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -12,7 +12,7 @@ plugins {
     `maven-publish`
     signing
     jacoco
-    id("com.diffplug.spotless") version "7.0.4"
+    id("com.diffplug.spotless") version "7.2.1"
     id("com.github.ben-manes.versions") version "0.52.0"
     id("io.github.gradle-nexus.publish-plugin") version "2.0.0"
     id("net.researchgate.release") version "3.1.0"