Return release resolution metadata explicitly. (#29)

Author: samuel-williams-shopify

bake/gem/github/release.rb

@@ -44,7 +44,7 @@ def resolve(number: ENV["RELEASE_PR"], commit: ENV["RELEASE_COMMIT"])
 		end
 	end
 
-	result
+	return result
 end
 
 # Build or restore the exact artifact for a merged release PR.