Release v15.0.0

Author: badboy

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## 15.0.0
+
 - **Breaking change:** Updating Kotlin template import statement as part of removing `service-glean` from Android Components. ([bug 1906941](https://bugzilla.mozilla.org/show_bug.cgi?id=1906941))
 - **Breaking change:** Do not generate Geckoview Streaming helper code ([#743](https://github.com/mozilla/glean_parser/pull/743))