update clap to v3.2.8 in third-party/rust

Summary:
v3.2.8 incorporates clap-rs/clap#3882, which is needed for some of the Clap w/ Python CLI fallback code I'm working on.

Ran all of the steps in https://www.internalfb.com/intern/wiki/Rust-at-facebook/Managing_fbsource_third-party_with_Reindeer/#overview

Reviewed By: zertosh

Differential Revision: D37566754

fbshipit-source-id: 998a4cd79c660d34c5e8468b2b27b6e0971f80ef

hphp/hack/src/hackc/cargo/hackc/Cargo.toml

@@ -14,7 +14,7 @@ anyhow = "1.0.56"
 bstr = { version = "0.2", features = ["serde1"] }
 bumpalo = { version = "3.8", features = ["collections"] }
 bytecode_printer = { path = "../../bytecode_printer" }
-clap = { version = "3.2.6", features = ["derive", "regex", "unicode", "wrap_help"] }
+clap = { version = "3.2.8", features = ["derive", "regex", "unicode", "wrap_help"] }
 compile = { path = "../../compile/cargo/compile" }
 decl_provider = { path = "../../decl_provider" }
 direct_decl_parser = { path = "../../../parser/api/cargo/direct_decl_parser" }

hphp/hack/src/utils/ffi_cbindgen/Cargo.toml

@@ -11,4 +11,4 @@ path = "ffi_cbindgen.rs"
 [dependencies]
 anyhow = "1.0.56"
 cbindgen = "0.22.0"
-clap = { version = "3.2.6", features = ["derive", "regex", "unicode", "wrap_help"] }
+clap = { version = "3.2.8", features = ["derive", "regex", "unicode", "wrap_help"] }

hphp/hack/src/utils/hhvm_options/Cargo.toml

@@ -9,6 +9,6 @@ path = "hhvm_options.rs"
 
 [dependencies]
 anyhow = "1.0.56"
-clap = { version = "3.2.6", features = ["derive", "regex", "unicode", "wrap_help"] }
+clap = { version = "3.2.8", features = ["derive", "regex", "unicode", "wrap_help"] }
 hdf = { path = "../hdf" }
 hhvm_runtime_options = { path = "hhvm_runtime_options/hhvm_runtime_options" }