Update dependency org.spockframework:spock-core to v2.1-groovy-3.0 (#509)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

gradle.properties

@@ -22,7 +22,7 @@ seleniumVersion=3.14.0
 servletApiVersion=4.0.1
 slf4jVersion=1.7.36
 snakeyamlVersion=1.30
-spockVersion=2.0-groovy-3.0
+spockVersion=2.1-groovy-3.0
 springBootVersion=2.6.4
 springVersion=5.3.16
 tomcatLog4jVersion=8.5.2