Update crate rg

Author: bors

2/rg

@@ -1,3 +1,4 @@
 {"name":"rg","vers":"0.1.0","deps":[],"cksum":"dfdbfa8a7139d7b2aa56b957c40a346de6fc39c6af70c349f7989074c45d1248","features":{},"yanked":false}
 {"name":"rg","vers":"0.2.0","deps":[],"cksum":"6145f1e53db206e7c354e3e932090aa330ed1540f59bede5de025a934d1d3380","features":{},"yanked":false}
 {"name":"rg","vers":"0.2.1","deps":[],"cksum":"075d1e5822eb7ed6924e1806992cf802de699272444f84c521aa86f3a8be344f","features":{},"yanked":false}
+{"name":"rg","vers":"0.2.2","deps":[],"cksum":"c97958ecb27001092d2fe57d2a71cd60e14d0ebaf7f5d4dc4106e60741198444","features":{"pcre2":[]},"yanked":false}