Bump the freefair group with 4 updates

Bumps the freefair group with 4 updates: [io.freefair.lombok](https://github.com/freefair/gradle-plugins), [io.freefair.javadoc-links](https://github.com/freefair/gradle-plugins), [io.freefair.javadoc-utf-8](https://github.com/freefair/gradle-plugins) and [io.freefair.maven-central.validate-poms](https://github.com/freefair/gradle-plugins).


Updates `io.freefair.lombok` from 8.13 to 8.13.1
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.13...8.13.1)

Updates `io.freefair.javadoc-links` from 8.13 to 8.13.1
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.13...8.13.1)

Updates `io.freefair.javadoc-utf-8` from 8.13 to 8.13.1
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.13...8.13.1)

Updates `io.freefair.maven-central.validate-poms` from 8.13 to 8.13.1
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.13...8.13.1)

---
updated-dependencies:
- dependency-name: io.freefair.lombok
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: freefair
- dependency-name: io.freefair.javadoc-links
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: freefair
- dependency-name: io.freefair.javadoc-utf-8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: freefair
- dependency-name: io.freefair.maven-central.validate-poms
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: freefair
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -9,10 +9,10 @@ plugins {
     id("org.cadixdev.licenser") version "0.6.1"
     id("me.qoomon.git-versioning") version "6.4.4"
     id("com.gorylenko.gradle-git-properties") version "2.5.0"
-    id("io.freefair.lombok") version "8.13"
-    id("io.freefair.javadoc-links") version "8.13"
-    id("io.freefair.javadoc-utf-8") version "8.13"
-    id("io.freefair.maven-central.validate-poms") version "8.13"
+    id("io.freefair.lombok") version "8.13.1"
+    id("io.freefair.javadoc-links") version "8.13.1"
+    id("io.freefair.javadoc-utf-8") version "8.13.1"
+    id("io.freefair.maven-central.validate-poms") version "8.13.1"
     id("ru.vyarus.pom") version "3.0.0"
     id("org.sonarqube") version "6.0.1.5171"
     id("io.codearte.nexus-staging") version "0.30.0"