chore: release bigtable 1.8.0 (#3681)

:robot: I have created a release \*beep\* \*boop\*
---
## [1.8.0](https://www.github.com/googleapis/google-cloud-go/compare/v1.7.1...v1.8.0) (2021-02-24)


### Features

* **bigtable:** support partial results in InstanceAdminClient.Clusters() ([#2932](https://www.github.com/googleapis/google-cloud-go/issues/2932)) ([28decb5](https://www.github.com/googleapis/google-cloud-go/commit/28decb55c366c5ec67e04800aa06179943b765f6))

This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).
diff --git a/bigtable/CHANGES.md b/bigtable/CHANGES.md
index fa5f9db..dc5517d 100644
--- a/bigtable/CHANGES.md
+++ b/bigtable/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## [1.8.0](https://www.github.com/googleapis/google-cloud-go/compare/v1.7.1...v1.8.0) (2021-02-24)
+
+
+### Features
+
+* **bigtable:** support partial results in InstanceAdminClient.Clusters() ([#2932](https://www.github.com/googleapis/google-cloud-go/issues/2932)) ([28decb5](https://www.github.com/googleapis/google-cloud-go/commit/28decb55c366c5ec67e04800aa06179943b765f6))
+
 ### [1.7.1](https://www.github.com/googleapis/google-cloud-go/compare/bigtable/v1.7.0...v1.7.1) (2021-01-25)