Fixed import order for linter.

Author: XrossFox

genai/image_generation/test_image_generation.py

@@ -22,8 +22,6 @@
 
 from google.cloud import storage
 
-import pytest
-
 import imggen_canny_ctrl_type_with_txt_img
 import imggen_inpainting_insert_mask_with_txt_img
 import imggen_inpainting_insert_with_txt_img
@@ -38,6 +36,8 @@
 import imggen_virtual_try_on_with_txt_img
 import imggen_with_txt
 
+import pytest
+
 os.environ["GOOGLE_GENAI_USE_ENTERPRISE"] = "True"
 os.environ["GOOGLE_CLOUD_LOCATION"] = "us-central1"
 # The project name is included in the CICD pipeline