Set minimum Rust version.

randombtree · randombtree · commit 89c9f55a2d16 · 2023-12-09T10:44:07.000+02:00
- This currently requires using either beta or nightly channel. - Due to rust-lang/rust#91611
diff --git a/Cargo.toml b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "rpcudp-rs"
 version = "0.1.0"
 edition = "2021"
+rust-version = "1.75.0"
 
 [features]
 default = ["async-std"]
