🧹 chore: implement language in Snippet class

Author: gaeljw

CHANGELOG.md

@@ -11,8 +11,12 @@ See also the [CHANGELOG](https://github.com/cucumber/cucumber-jvm/blob/master/CH
 
 ### Added
 
+- [Scala] `ScalaSnippet` now implements `language()` method from `io.cucumber.core.backend.Snippet`
+
 ### Changed
 
+- [Core] Update `cucumber-core` dependency to [7.29.0](https://github.com/cucumber/cucumber-jvm/blob/main/CHANGELOG.md)
+
 ### Deprecated
 
 ### Removed

cucumber-scala/src/main/scala/io/cucumber/scala/ScalaSnippet.scala

@@ -3,6 +3,7 @@ package io.cucumber.scala
 import java.lang.reflect.Type
 import java.text.MessageFormat
 import java.util.{Map => JMap}
+import java.util.Optional
 
 import io.cucumber.core.backend.Snippet
 import io.cucumber.datatable.DataTable
@@ -20,6 +21,10 @@ class ScalaSnippet extends Snippet {
 
   import ScalaSnippet.tripleDoubleQuotes
 
+  override def language(): Optional[String] = {
+    Optional.of("scala")
+  }
+
   override def template(): MessageFormat = {
     new MessageFormat(
       s"""{0}(${tripleDoubleQuotes}{1}${tripleDoubleQuotes}) '{' ({3}) =>