CHANGELOG.md in google-apis-dataflow_v1b3-0.38.0 vs CHANGELOG.md in google-apis-dataflow_v1b3-0.39.0

@@ -1,6 +1,10 @@
 # Release history for google-apis-dataflow_v1b3
 
+### v0.39.0 (2023-05-21)
+
+* Regenerated from discovery document revision 20230514
+
 ### v0.38.0 (2023-05-07)
 
 * Regenerated from discovery document revision 20230427
 
 ### v0.37.0 (2023-03-19)