Bump nebula.lint from 20.6.2 to 21.0.0

Bumps nebula.lint from 20.6.2 to 21.0.0.

---
updated-dependencies:
- dependency-name: nebula.lint
  dependency-version: 21.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle

@@ -7,7 +7,7 @@ plugins {
     id 'org.asciidoctor.jvm.convert' version '4.0.4'
     id "net.researchgate.release" version "3.1.0"
     id "com.gorylenko.gradle-git-properties" version "2.4.1"
-    id 'nebula.lint' version "20.6.2"
+    id 'nebula.lint' version "21.0.0"
     id 'java'
     id 'jacoco'
 }