chore: release 0.57.0 (#1090)

🤖 I have created a release \*beep\* \*boop\*
---
## [0.57.0](https://www.github.com/googleapis/gapic-generator-python/compare/v0.56.2...v0.57.0) (2021-11-17)


### Features

* forward compatible diregapic LRO support ([#1085](https://www.github.com/googleapis/gapic-generator-python/issues/1085)) ([aa7f4d5](https://www.github.com/googleapis/gapic-generator-python/commit/aa7f4d568f7f43738ab3489fc84ce6bc5d6bda18))
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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]

packages/gapic-generator/CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.57.0](https://www.github.com/googleapis/gapic-generator-python/compare/v0.56.2...v0.57.0) (2021-11-17)
+
+
+### Features
+
+* forward compatible diregapic LRO support ([#1085](https://www.github.com/googleapis/gapic-generator-python/issues/1085)) ([aa7f4d5](https://www.github.com/googleapis/gapic-generator-python/commit/aa7f4d568f7f43738ab3489fc84ce6bc5d6bda18))
+
 ### [0.56.2](https://www.github.com/googleapis/gapic-generator-python/compare/v0.56.1...v0.56.2) (2021-11-08)