chore: release firestore 1.5.0 (#3675)

diff --git a/firestore/CHANGES.md b/firestore/CHANGES.md
index 92d63c7..888ceba 100644
--- a/firestore/CHANGES.md
+++ b/firestore/CHANGES.md
@@ -1,5 +1,17 @@
 # Changes
 
+## [1.5.0](https://www.github.com/googleapis/google-cloud-go/compare/v1.4.0...v1.5.0) (2021-02-24)
+
+
+### Features
+
+* **firestore:** add opencensus tracing support  ([#2942](https://www.github.com/googleapis/google-cloud-go/issues/2942)) ([257f322](https://www.github.com/googleapis/google-cloud-go/commit/257f322e68b75765bd316ccefed5461d4df538a0))
+
+
+### Bug Fixes
+
+* **firestore:** address a missing branch in watch.stop() error remapping ([#3643](https://www.github.com/googleapis/google-cloud-go/issues/3643)) ([89ad55d](https://www.github.com/googleapis/google-cloud-go/commit/89ad55d72f79995a68f9c2ed1cd9b5ba50009d6d))
+
 ## [1.4.0](https://www.github.com/googleapis/google-cloud-go/compare/firestore/v1.3.0...v1.4.0) (2020-12-03)