CHANGELOG.md in google-apis-alertcenter_v1beta1-0.14.0 vs CHANGELOG.md in google-apis-alertcenter_v1beta1-0.15.0

@@ -1,6 +1,11 @@
 # Release history for google-apis-alertcenter_v1beta1
 
+### v0.15.0 (2021-12-21)
+
+* Regenerated from discovery document revision 20211214
+* Unspecified changes
+
 ### v0.14.0 (2021-10-20)
 
 * Regenerated from discovery document revision 20211012
 
 ### v0.13.0 (2021-09-01)