fix: allow anonymous users to get build details (#878)

Author: lorenzo-cavazzi

components/renku_data_services/session/db.py

@@ -754,10 +754,6 @@ async def delete_launcher(self, user: base_models.APIUser, launcher_id: ULID) ->
 
     async def get_build(self, user: base_models.APIUser, build_id: ULID) -> models.Build:
         """Get a specific build."""
-
-        if not user.is_authenticated or user.id is None:
-            raise errors.UnauthorizedError(message="You do not have the required permissions for this operation.")
-
         async with self.session_maker() as session, session.begin():
             stmt = select(schemas.BuildORM).where(schemas.BuildORM.id == build_id)
             result = await session.scalars(stmt)
@@ -774,7 +770,8 @@ async def get_build(self, user: base_models.APIUser, build_id: ULID) -> models.B
                 raise errors.MissingResourceError(message=not_found_message)
 
             # Check and refresh the status of in-progress builds
-            await self._refresh_build(build=build, session=session, user_id=user.id)
+            if user.id is not None:
+                await self._refresh_build(build=build, session=session, user_id=user.id)
 
             return build.dump()