build(ariadne): vendor clap

third_party/crates/proc-macro2-1.0.107/BUILD.bazel

@@ -39,6 +39,7 @@ rust_library(
         ],
     ),
     crate_features = [
+        "default",
         "proc-macro",
     ],
     crate_root = "src/lib.rs",
@@ -143,6 +144,7 @@ cargo_build_script(
         ],
     ),
     crate_features = [
+        "default",
         "proc-macro",
     ],
     crate_name = "build_script_build",