Merge pull request #789 from spotbugs/renovate/groovy-monorepo

Update groovy monorepo to v4.0.21

Author: hazendaz

pom.xml

@@ -176,7 +176,7 @@
         <slf4jVersion>2.0.12</slf4jVersion>
 
         <antVersion>1.10.14</antVersion>
-        <groovyVersion>4.0.20</groovyVersion>
+        <groovyVersion>4.0.21</groovyVersion>
         <javaparserVersion>3.25.10</javaparserVersion>
 
         <doxiaVersion>1.12.0</doxiaVersion>