chore(pubsub): release pubsub/v1.8.2 (#3064)

* chore(pubsub): release pubsub/v1.8.2

* update version
diff --git a/internal/version/version.go b/internal/version/version.go
index 5c5c5c8..cd969d5 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -26,7 +26,7 @@
 
 // Repo is the current version of the client libraries in this
 // repo. It should be a date in YYYYMMDD format.
-const Repo = "20201019"
+const Repo = "20201021"
 
 // Go returns the Go runtime version. The returned string
 // has no whitespace.
diff --git a/pubsub/CHANGES.md b/pubsub/CHANGES.md
index 005da07..a2aa051 100644
--- a/pubsub/CHANGES.md
+++ b/pubsub/CHANGES.md
@@ -1,5 +1,11 @@
 # Changes
 
+## v1.8.2
+
+- Fixes:
+  - fix(pubsub): track errors in published messages opencensus metric (#2970)
+  - fix(pubsub): do not propagate context deadline exceeded error (#3055)
+
 ## v1.8.1
 
 - Suppress connection is closing on error on subscriber close. (#2951)