Merge pull request #894 from lukas8219/rename-test-file-iac

chore(rename): rename update_test.go to follow conventions

Author: matheuscscp

internal/controller/update_test.go renamed to internal/controller/imageupdateautomation_controller_test.go

@@ -1,5 +1,5 @@
 /*
-Copyright 2020 The Flux authors
+Copyright 2025 The Flux authors
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.