CHANGELOG.md in google-apis-spanner_v1-0.19.0 vs CHANGELOG.md in google-apis-spanner_v1-0.20.0

@@ -1,6 +1,11 @@
 # Release history for google-apis-spanner_v1
 
+### v0.20.0 (2021-10-23)
+
+* Regenerated from discovery document revision 20211021
+* Unspecified changes
+
 ### v0.19.0 (2021-09-27)
 
 * Regenerated from discovery document revision 20210914
 
 ### v0.18.0 (2021-08-30)