Add myself to .mailmap

I changed my email to rin@patch.cx
vor 3 Jahren · e2927d714e
--- a/.mailmap
+++ b/.mailmap
@@ -1,2 +1,3 @@
 Ariadne Conill <ariadne@dereferenced.org> <nenolod@dereferenced.org>
 Ariadne Conill <ariadne@dereferenced.org> <nenolod@gmail.com>
 rinpatch <rin@patch.cx> <rinpatch@sdf.org>