chore(bigquery): release v1.16.0 (#3732)

diff --git a/bigquery/CHANGES.md b/bigquery/CHANGES.md
index dc101d0..8aa73e4 100644
--- a/bigquery/CHANGES.md
+++ b/bigquery/CHANGES.md
@@ -1,5 +1,8 @@
 # Changes
 
+## v1.16.0
+
+- Updates to various dependencies.
 
 ## [1.15.0](https://www.github.com/googleapis/google-cloud-go/compare/bigquery/v1.14.0...v1.15.0) (2021-01-14)