Set language inputs in start-proxy check workflow

Author: mbg

.github/workflows/__start-proxy.yml

@@ -11,6 +11,7 @@ steps:
     id: proxy
     uses: ./../action/start-proxy
     with:
+      language: java
       registry_secrets: |
         [
           {
@@ -42,5 +43,5 @@ steps:
 
   - uses: ./../action/init
     with:
-      languages: csharp
+      languages: java
       tools: ${{ steps.prepare-test.outputs.tools-url }}