Update README

Author: n-rodriguez

README.md

@@ -11,7 +11,7 @@
 
 It's tested against :
 
-* Rails: 6.1.7 / 7.0.4 / 7.1.0
+* Rails: 7.0.4 / 7.1.0
 * Ruby: 3.0 / 3.1 / 3.2 / 3.3
 * Databases: MySQL 8 / SQLite3 / Postgresql 16 / Oracle XE 11.2 (thanks to [travis-oracle](https://github.com/cbandy/travis-oracle))
 * Adapters: sqlite / mysql2 / trilogy / postgres / postgis / oracle