chore: release 1.4.3 (#71)

* updated CHANGELOG.md [ci skip]

* updated setup.cfg [ci skip]

* updated setup.py [ci skip]

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

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,14 @@
 
 [1]: https://pypi.org/project/google-cloud-pubsub/#history
 
+### [1.4.3](https://www.github.com/googleapis/python-pubsub/compare/v1.4.2...v1.4.3) (2020-04-16)
+
+
+### Bug Fixes
+
+* fix docs warnings in Sphinx 3.0+ ([#70](https://www.github.com/googleapis/python-pubsub/issues/70)) ([21e761e](https://www.github.com/googleapis/python-pubsub/commit/21e761ee89a4c03e105dc9cddbab0a34be9a9fda))
+* restrict api-core dependency to < 1.17.0 ([#76](https://www.github.com/googleapis/python-pubsub/issues/76)) ([191b051](https://www.github.com/googleapis/python-pubsub/commit/191b0516335f5c60828a818ba79e99d6c68aa7bd))
+
 ## [1.4.2](https://www.github.com/googleapis/python-pubsub/compare/v1.4.1...v1.4.2) (2020-03-25)
 
 ### Bug Fixes

setup.py

@@ -22,7 +22,7 @@
 
 name = "google-cloud-pubsub"
 description = "Google Cloud Pub/Sub API client library"
-version = "1.4.2"
+version = "1.4.3"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'