tr(groovy): update to 3.0.8 (#354)

Update groovy version to 3.0.8

bonita-runtime-bom/pom.xml

@@ -32,7 +32,7 @@
             <dependency>
                 <groupId>org.codehaus.groovy</groupId>
                 <artifactId>groovy-all</artifactId>
-                <version>3.0.7</version>
+                <version>3.0.8</version>
                 <type>pom</type>
             </dependency>
         </dependencies>