Fix builtin-targets for probe-rs (#32)

During minimizing the dependency-set for `cargo vet` accidentally the
builtin-targets support for probe-rs was lost. This means that the
`bootloader-tool` could not connect to the target because the target
description was not builtin.

This PR corrects this issue.

Author: Wassasin

bootloader-tool/Cargo.lock

@@ -8,7 +8,7 @@ license = "MIT"
 clap = { version = "4.5", features = ["derive"] }
 
 object = { version = "0.37.3", features = ["build"] }
-probe-rs = { version = "0.29.1", default-features = false }
+probe-rs = { version = "0.29.1", default-features = false, features = ["builtin-targets"] }
 
 tokio = { version = "1.47.1", features = ["macros", "rt", "rt-multi-thread"] }