chore: release 0.55.0 (#1059)

🤖 I have created a release \*beep\* \*boop\*
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## [0.55.0](https://www.github.com/googleapis/gapic-generator-python/compare/v0.54.0...v0.55.0) (2021-11-01)


### Features

* add fragment tests ([#1056](https://www.github.com/googleapis/gapic-generator-python/issues/1056)) ([9d9b33d](https://www.github.com/googleapis/gapic-generator-python/commit/9d9b33dadf587a6d0b09031edeea597d6d2eae62))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.55.0](https://www.github.com/googleapis/gapic-generator-python/compare/v0.54.0...v0.55.0) (2021-11-01)
+
+
+### Features
+
+* add fragment tests ([#1056](https://www.github.com/googleapis/gapic-generator-python/issues/1056)) ([9d9b33d](https://www.github.com/googleapis/gapic-generator-python/commit/9d9b33dadf587a6d0b09031edeea597d6d2eae62))
+
 ## [0.54.0](https://www.github.com/googleapis/gapic-generator-python/compare/v0.53.4...v0.54.0) (2021-10-29)