Bump version 0.7.21

ssrlive · ssrlive · commit e3d20515a305 · 2025-05-28T08:13:10.000+08:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tun"
-version = "0.7.20"
+version = "0.7.21"
 edition = "2024"
 authors = ["meh. <meh@schizofreni.co>", "@ssrlive"]
 license = "WTFPL"
