Add Java 25 build compatibility via Groovy 4.0.30-SNAPSHOT

This change enables building TinkerPop with Java 25 by:

1. Updating Groovy version to 4.0.30-SNAPSHOT which includes ASM 9.9
   (required for Java 25 class file version 69 support)

2. Adding explicit annotationProcessorPaths to gremlin-groovy's
   maven-compiler-plugin configuration. This ensures the GremlinDsl
   annotation processor can load its dependencies (javapoet, gremlin-core)
   which is required due to stricter classloader isolation in Java 25.

Build requirements:
- Requires local installation of Groovy 4.0.30-SNAPSHOT with ASM 9.9
- Use -Denforcer.skip=true to bypass Java version check
- Use -Dmaven.javadoc.skip=true due to Groovy source path issues

Author: jrepp

gremlin-groovy/pom.xml

@@ -153,6 +153,38 @@ limitations under the License.
                     <compilerArgs>
                         <arg>-parameters</arg>
                     </compilerArgs>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>org.apache.tinkerpop</groupId>
+                            <artifactId>gremlin-annotations</artifactId>
+                            <version>${project.version}</version>
+                        </path>
+                        <path>
+                            <groupId>org.apache.tinkerpop</groupId>
+                            <artifactId>gremlin-core</artifactId>
+                            <version>${project.version}</version>
+                        </path>
+                        <path>
+                            <groupId>org.apache.tinkerpop</groupId>
+                            <artifactId>gremlin-shaded</artifactId>
+                            <version>${project.version}</version>
+                        </path>
+                        <path>
+                            <groupId>org.apache.tinkerpop</groupId>
+                            <artifactId>gremlin-language</artifactId>
+                            <version>${project.version}</version>
+                        </path>
+                        <path>
+                            <groupId>com.squareup</groupId>
+                            <artifactId>javapoet</artifactId>
+                            <version>${javapoet.version}</version>
+                        </path>
+                        <path>
+                            <groupId>org.antlr</groupId>
+                            <artifactId>antlr4-runtime</artifactId>
+                            <version>${antlr4.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
                 </configuration>
             </plugin>
         </plugins>

pom.xml

@@ -162,7 +162,7 @@ limitations under the License.
         <commons.text.version>1.10.0</commons.text.version>
         <cucumber.version>7.21.1</cucumber.version>
         <exp4j.version>0.4.8</exp4j.version>
-        <groovy.version>4.0.25</groovy.version>
+        <groovy.version>4.0.30-SNAPSHOT</groovy.version>
         <guice.version>4.2.3</guice.version>
         <hadoop.version>3.3.3</hadoop.version>
         <hamcrest.version>3.0</hamcrest.version>