Update minor version to 7.11.0 (#22959)

Co-authored-by: Mmbot <mmbot@mattermost>
Co-authored-by: Akis Maziotis <akis.maziotis@mattermost.com>

server/model/version.go

@@ -13,6 +13,7 @@ import (
 // It should be maintained in chronological order with most current
 // release at the front of the list.
 var versions = []string{
+	"7.11.0",
 	"7.10.0",
 	"7.9.0",
 	"7.8.0",