chore(v1): release 1.19.3 (#745)

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

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-cloud-spanner/#history
 
+## [1.19.3](https://github.com/googleapis/python-spanner/compare/v1.19.2...v1.19.3) (2022-06-09)
+
+
+### Bug Fixes
+
+* **deps:** require protobuf<4.0.0 on v1 branch ([#744](https://github.com/googleapis/python-spanner/issues/744)) ([ba57023](https://github.com/googleapis/python-spanner/commit/ba570234a3651f436221ce16797c4a751a5aeb25))
+
 ### [1.19.2](https://github.com/googleapis/python-spanner/compare/v1.19.1...v1.19.2) (2022-04-07)
 
 

setup.py

@@ -22,7 +22,7 @@
 
 name = "google-cloud-spanner"
 description = "Cloud Spanner API client library"
-version = "1.19.2"
+version = "1.19.3"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'