chore(main): release 3.22.1 (#833)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,18 @@
 
 [1]: https://pypi.org/project/google-cloud-spanner/#history
 
+## [3.22.1](https://github.com/googleapis/python-spanner/compare/v3.22.0...v3.22.1) (2022-10-04)
+
+
+### Bug Fixes
+
+* **deps:** Require protobuf >= 3.20.2 ([#830](https://github.com/googleapis/python-spanner/issues/830)) ([4d71563](https://github.com/googleapis/python-spanner/commit/4d7156376f4633de6c1a2bfd25ba97126386ebd0))
+
+
+### Documentation
+
+* **samples:** add samples for CMMR phase 2 ([4282340](https://github.com/googleapis/python-spanner/commit/4282340bc2c3a34496c59c33f5c64ff76dceda4c))
+
 ## [3.22.0](https://github.com/googleapis/python-spanner/compare/v3.21.0...v3.22.0) (2022-09-26)
 
 

setup.py

@@ -22,7 +22,7 @@
 
 name = "google-cloud-spanner"
 description = "Cloud Spanner API client library"
-version = "3.22.0"
+version = "3.22.1"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'