Make the libudev dependency optional

Author: ivmarkov

espflash/Cargo.toml

@@ -54,7 +54,7 @@ miette = "7.2.0"
 parse_int = { version = "0.6.0", optional = true }
 regex = { version = "1.11.0", optional = true }
 serde = { version = "1.0.210", features = ["derive"] }
-serialport = { version = "4.6.0", optional = true }
+serialport = { version = "4.6.0", default-features = false, optional = true }
 sha2 = "0.10.8"
 slip-codec = { version = "0.4.0", optional = true }
 strum = { version = "0.26.3", features = ["derive"] }
@@ -67,7 +67,8 @@ xmas-elf = "0.9.1"
 libc = "0.2.159"
 
 [features]
-default = ["cli"]
+default = ["cli", "libudev"]
+libudev = ["serialport?/libudev"]
 cli = [
     "dep:addr2line",
     "dep:clap",