Add myself (mati865) to the review rotation

I've been procrastinating long enough.

Author: mati865

triagebot.toml

@@ -1430,6 +1430,7 @@ compiler = [
     "@JonathanBrouwer",
     "@lcnr",
     "@madsmtm",
+    "@mati865",
     "@Nadrieril",
     "@nnethercote",
     "@oli-obk",