feat: manual release 9.1.0 (#1670)

Author: silviuaavram

other/manual-releases.md

@@ -47,4 +47,4 @@ change is to release a new patch version.
 Reference: #<the number of a relevant pull request, issue, or commit>
 ```
 
-The number of times we've had to do a manual release is: 10
+The number of times we've had to do a manual release is: 11