chore: Upgrade to clap 3.2

Author: epage

Cargo.toml

@@ -63,7 +63,7 @@ toml_edit =  { version = "0.14.3", features = ["serde", "easy", "perf"] }
 unicode-xid = "0.2.0"
 url = "2.2.2"
 walkdir = "2.2"
-clap = "3.1.0"
+clap = "3.2.1"
 unicode-width = "0.1.5"
 openssl = { version = '0.10.11', optional = true }
 im-rc = "15.0.0"

tests/testsuite/cargo_add/invalid_target_empty/stderr.log

@@ -1,8 +1,3 @@
 error: The argument '--target <TARGET>' requires a value but none was supplied
 
-USAGE:
-    cargo add [OPTIONS] <DEP>[@<VERSION>] ...
-    cargo add [OPTIONS] --path <PATH> ...
-    cargo add [OPTIONS] --git <URL> ...
-
 For more information try --help