CHANGELOG.md in google-apis-chat_v1-0.50.0 vs CHANGELOG.md in google-apis-chat_v1-0.51.0

@@ -1,6 +1,10 @@
 # Release history for google-apis-chat_v1
 
+### v0.51.0 (2023-01-29)
+
+* Regenerated from discovery document revision 20230119
+
 ### v0.50.0 (2023-01-22)
 
 * Regenerated from discovery document revision 20230115
 
 ### v0.49.0 (2023-01-15)