chore: release 0.74.0 (#3404)

diff --git a/CHANGES.md b/CHANGES.md
index 6d4aa4a..6befd9f 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,20 @@
 # Changes
 
 
+## [0.74.0](https://www.github.com/googleapis/google-cloud-go/compare/v0.73.0...v0.74.0) (2020-12-10)
+
+
+### Features
+
+* **all:** auto-regenerate gapics , refs [#3440](https://www.github.com/googleapis/google-cloud-go/issues/3440) [#3436](https://www.github.com/googleapis/google-cloud-go/issues/3436) [#3394](https://www.github.com/googleapis/google-cloud-go/issues/3394) [#3391](https://www.github.com/googleapis/google-cloud-go/issues/3391) [#3374](https://www.github.com/googleapis/google-cloud-go/issues/3374)
+* **internal/gapicgen:** support generating only gapics with genlocal ([#3383](https://www.github.com/googleapis/google-cloud-go/issues/3383)) ([eaa742a](https://www.github.com/googleapis/google-cloud-go/commit/eaa742a248dc7d93c019863248f28e37f88aae84))
+* **servicedirectory:** start generating apiv1 ([#3382](https://www.github.com/googleapis/google-cloud-go/issues/3382)) ([2774925](https://www.github.com/googleapis/google-cloud-go/commit/2774925925909071ebc585cf7400373334c156ba))
+
+
+### Bug Fixes
+
+* **internal/gapicgen:** don't create genproto pr as draft ([#3379](https://www.github.com/googleapis/google-cloud-go/issues/3379)) ([517ab0f](https://www.github.com/googleapis/google-cloud-go/commit/517ab0f25e544498c5374b256354bc41ba936ad5))
+
 ## [0.73.0](https://www.github.com/googleapis/google-cloud-go/compare/v0.72.0...v0.73.0) (2020-12-04)