chore(deps): update dependency org.spockframework:spock-core to v1.3-groovy-2.5

Author: renovate-bot

graphql-java-servlet/build.gradle

@@ -33,7 +33,7 @@ dependencies {
 
     // Unit testing
     testImplementation "org.codehaus.groovy:groovy-all:2.4.1"
-    testImplementation "org.spockframework:spock-core:1.1-groovy-2.4-rc-3"
+    testImplementation "org.spockframework:spock-core:1.3-groovy-2.5"
     testRuntimeOnly "cglib:cglib-nodep:3.2.4"
     testRuntimeOnly "org.objenesis:objenesis:2.5.1"
     testImplementation "org.slf4j:slf4j-simple:$LIB_SLF4J_VER"