Cargo.toml: bump MSRV to 1.84.1

Simlar to coreos/coreos-installer@948e936

Author: HuijingHei

Cargo.toml

@@ -5,7 +5,7 @@ license = "Apache-2.0"
 version = "0.2.27"
 authors = ["Colin Walters <[email protected]>"]
 edition = "2021"
-rust-version = "1.75.0"
+rust-version = "1.84.1"
 homepage = "https://github.com/coreos/bootupd"
 
 include = ["src", "LICENSE", "Makefile", "systemd"]