feat: update version constant to v1.10.0 (#3952)

- Update the version constant from "v1.9.1" to "v1.10.0"

Signed-off-by: Bo-Yi Wu <[email protected]>

Author: appleboy

version.go

@@ -5,4 +5,4 @@
 package gin
 
 // Version is the current gin framework's version.
-const Version = "v1.9.1"
+const Version = "v1.10.0"