clap: Pin to older clap to allow build with rust 1.70

Claps MSRV is quite aggressive, pin it to 4.4.x to allow building with
rust 1.70 as currently present in debian testing.

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>

bmap-rs/Cargo.toml

@@ -15,7 +15,7 @@ bmap-parser = { path = "../bmap-parser", version = "0.2.0"}
 anyhow = "1.0.66"
 nix = { version = "0.27.1", features = ["fs"] }
 flate2 = "1.0.24"
-clap = { version = "4.0.18", features = ["cargo"] }
+clap = { version = "~4.4.0", features = ["cargo"] }
 indicatif = { version = "0.17.1", features = ["tokio"] }
 async-compression = { version = "0.4.5", features = ["gzip", "futures-io"] }
 tokio = { version = "1.21.2", features = ["rt", "macros", "fs", "rt-multi-thread"] }