Bump version to 2.2.0 (#3087)

HAOCHENYE · web-flow · commit 3a5fb4b96ab1 · 2024-04-16T17:00:23.000+08:00
diff --git a/mmcv/version.py b/mmcv/version.py
@@ -1,5 +1,5 @@
 # Copyright (c) OpenMMLab. All rights reserved.
-__version__ = '2.1.0'
+__version__ = '2.2.0'
 
 
 def parse_version_info(version_str: str, length: int = 4) -> tuple:
