chore(storage): release v1.15.0 (#3730)

diff --git a/storage/CHANGES.md b/storage/CHANGES.md
index f0f3601..4c122dc 100644
--- a/storage/CHANGES.md
+++ b/storage/CHANGES.md
@@ -1,5 +1,9 @@
 # Changes
 
+## v1.14.0
+
+- Updates to various dependencies.
+
 ## [1.13.0](https://www.github.com/googleapis/google-cloud-go/compare/storage/v1.12.0...v1.13.0) (2021-02-03)