Add path to support homebrew on arm based macbook (#1278)

Author: stiak

ext/mysql2/extconf.rb

@@ -48,6 +48,7 @@ def add_ssl_defines(header)
   /opt/local
   /opt/local/mysql
   /opt/local/lib/mysql5*
+  /opt/homebrew/opt/mysql*
   /usr
   /usr/mysql
   /usr/local