chore: readme , bump deno compat version

Author: sylc

README.md

@@ -1,5 +1,5 @@
 [![JSR](https://jsr.io/badges/@sylc/dkill)](https://jsr.io/@sylc/dkill)
-![deno compatibility](https://shield.deno.dev/deno/^1.42.4)
+![deno compatibility](https://shield.deno.dev/deno/^2.1.0)
 
 <h1 align="center">
   🎯 dkill