Bump org.apache.groovy:groovy from 4.0.20 to 4.0.21 (#1065)

Author: dependabot[bot]

build.gradle

@@ -17,7 +17,7 @@ ext {
   //version (changing these should be considered thoroughly!)
   javaVersion = JavaVersion.VERSION_17
   groovyVersion = "4.0"
-  groovyBinaryVersion = "4.0.20"
+  groovyBinaryVersion = "4.0.21"
   testcontainersVersion = '1.19.7'
 
   scriptsLocation = 'gradle' + File.separator + 'scripts' + File.separator //location of script plugins