chore(master): release 0.60.0 (googleapis#1139)

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

Author: release-please[bot]

CHANGELOG.md

@@ -1,6 +1,19 @@
 # Changelog
 
 
+## [0.60.0](https://github.com/googleapis/gapic-generator-python/compare/v0.59.1...v0.60.0) (2022-01-19)
+
+
+### Features
+
+* add api key support ([#969](https://github.com/googleapis/gapic-generator-python/issues/969)) ([7c72739](https://github.com/googleapis/gapic-generator-python/commit/7c7273919193f321e0dc2d4156b35be1b4733458))
+* generate snippet metadata  ([#1129](https://github.com/googleapis/gapic-generator-python/issues/1129)) ([9e46031](https://github.com/googleapis/gapic-generator-python/commit/9e46031d01edc3a461140fe3b29d8d400f5ddf86))
+
+
+### Bug Fixes
+
+* only set unset fields if they are query params ([#1130](https://github.com/googleapis/gapic-generator-python/issues/1130)) ([9ad98ca](https://github.com/googleapis/gapic-generator-python/commit/9ad98ca6833f1b280bf3c04c858f92276d59ffbe))
+
 ### [0.59.1](https://github.com/googleapis/gapic-generator-python/compare/v0.59.0...v0.59.1) (2022-01-10)