Bump io.freefair.maven-central.validate-poms from 8.10 to 8.12.2.1

Bumps [io.freefair.maven-central.validate-poms](https://github.com/freefair/gradle-plugins) from 8.10 to 8.12.2.1.
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.10...8.12.2.1)

---
updated-dependencies:
- dependency-name: io.freefair.maven-central.validate-poms
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -11,7 +11,7 @@ plugins {
   id("net.ossindex.audit") version "0.4.11"
   id("com.gradle.plugin-publish") version "1.3.0"
   id("io.github.gradle-nexus.publish-plugin") version "2.0.0"
-  id("io.freefair.maven-central.validate-poms") version "8.10"
+  id("io.freefair.maven-central.validate-poms") version "8.12.2.1"
 }
 
 val dependencyVersions = listOf<String>(