Bump org.spockframework:spock-core from 2.3-groovy-4.0 to 2.4-groovy-5.0

Bumps [org.spockframework:spock-core](https://github.com/spockframework/spock) from 2.3-groovy-4.0 to 2.4-groovy-5.0.
- [Release notes](https://github.com/spockframework/spock/releases)
- [Changelog](https://github.com/spockframework/spock/blob/master/docs/release_notes.adoc)
- [Commits](https://github.com/spockframework/spock/commits)

---
updated-dependencies:
- dependency-name: org.spockframework:spock-core
  dependency-version: 2.4-groovy-5.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

ocpp-v1_6-test/pom.xml

@@ -65,7 +65,7 @@
         <dependency>
             <groupId>org.spockframework</groupId>
             <artifactId>spock-core</artifactId>
-            <version>2.3-groovy-4.0</version>
+            <version>2.4-groovy-5.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>