chore(bigquery): release bigquery/v1.13.0 (#3140)

This PR will be tagged bigquery/v1.13.0
diff --git a/bigquery/CHANGES.md b/bigquery/CHANGES.md
index 1f6b972..d4c1a4f 100644
--- a/bigquery/CHANGES.md
+++ b/bigquery/CHANGES.md
@@ -1,5 +1,15 @@
 # Changes
 
+
+## v1.13.0
+
+* Support retries for specific http2 transport race.
+* Remove unused datasource client from bigquery/datatransfer.
+* Adds support for authorized User Defined Functions (UDFs).
+* Documentation improvements.
+* Various updates to autogenerated clients.
+
+
 ## v1.12.0
 
 * Adds additional retry support for table deletion.
diff --git a/internal/version/version.go b/internal/version/version.go
index 80536ea..fd9dd91 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 = "20201027"
+const Repo = "20201104"
 
 // Go returns the Go runtime version. The returned string
 // has no whitespace.