all: release v0.59.0 (#2505)

This commit will be tagged v0.59.0.
diff --git a/CHANGES.md b/CHANGES.md
index 5868db4..ae1a825 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,31 @@
 # Changes
 
+## v0.59.0
+
+### Announcements
+
+goolgeapis/google-cloud-go has moved its source of truth to GitHub and is no longer a mirror. This means that our
+contributing process has changed a bit. We will now be conducting all code reviews on GitHub which means we now accept
+pull requests! If you have a version of the codebase previously checked out you may wish to update your git remote to
+point to GitHub.
+
+### Changes
+
+- all:
+  - Remove dependency on honnef.co/go/tools.
+  - Update our contributing instructions now that we use GitHub for reviews.
+  - Remove some un-inclusive terminology.
+- compute/metadata: 
+  - Pass cancelable context to DNS lookup.
+- .github:
+  - Update templates issue/PR templates.
+- internal:
+  - Bump several clients to GA.
+  - Fix GoDoc badge source.
+  - Several automation changes related to the move to GitHub.
+  - Start generating a client for asset v1p5beta1.
+- Various updates to autogenerated clients.
+
 ## v0.58.0
 
 ### Deprecation notice