Bump spock.version from 2.0-M5-groovy-3.0 to 2.0-groovy-3.0

Bumps `spock.version` from 2.0-M5-groovy-3.0 to 2.0-groovy-3.0.

Updates `spock-core` from 2.0-M5-groovy-3.0 to 2.0-groovy-3.0

Updates `spock-junit4` from 2.0-M5-groovy-3.0 to 2.0-groovy-3.0

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

Author: dependabot[bot]

e2e/pom.xml

@@ -15,7 +15,7 @@
     </parent>
 
     <properties>
-        <spock.version>2.0-M5-groovy-3.0</spock.version>
+        <spock.version>2.0-groovy-3.0</spock.version>
     </properties>
     <dependencies>
         <dependency>