CHANGELOG.md in google-apis-chat_v1-0.38.0 vs CHANGELOG.md in google-apis-chat_v1-0.39.0

@@ -1,6 +1,11 @@
 # Release history for google-apis-chat_v1
 
+### v0.39.0 (2022-07-08)
+
+* Regenerated from discovery document revision 20220701
+* Regenerated using generator version 0.9.0
+
 ### v0.38.0 (2022-06-30)
 
 * Regenerated using generator version 0.8.0
 
 ### v0.37.0 (2022-06-24)