feat(public-api): make Target.graphqlEndpointUrl available in public API (#6843)

Author: dotansimha

.changeset/witty-bags-deny.md

@@ -0,0 +1,5 @@
+---
+'hive': minor
+---
+
+Make `Target.graphqlEndpointUrl` available in public GraphQL API

packages/services/api/src/modules/target/module.graphql.ts

@@ -268,9 +268,10 @@ export default gql`
     name: String! @deprecated(reason: "Use the 'slug' field instead.")
     project: Project!
     """
-    The endpoint url of the target's explorer instance.
+    The endpoint url of the target's explorer/laboratory instance.
+    This is the public endpoint configured in target's settings.
     """
-    graphqlEndpointUrl: String
+    graphqlEndpointUrl: String @tag(name: "public")
     """
     Whether a dangerous change fails a schema check and requires a manual approval.
     """