Merge pull request #630 from entur/duplicate-codespaces

Dedupe codespaces list

Author: testower

src/main/java/org/entur/lamassu/service/impl/FeedProviderServiceImpl.java

@@ -82,7 +82,11 @@ public FeedProvider getFeedProviderBySystemId(String systemId) {
 
   @Override
   public List<String> getCodespaces() {
-    return getFeedProviders().stream().map(FeedProvider::getCodespace).toList();
+    return getFeedProviders()
+      .stream()
+      .map(FeedProvider::getCodespace)
+      .distinct()
+      .toList();
   }
 
   @Override