Bump http-body-util min version to 0.1.2

[tyranron]

Similar to #1128, but for http-body-util.

 error[E0432]: unresolved import `http_body_util::BodyDataStream`
  --> /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.4.0/src/filters/body.rs:14:5
   |
14 | use http_body_util::BodyDataStream;
   |     ^^^^^^^^^^^^^^^^--------------
   |     |               |
   |     |               help: a similar name exists in the module: `BodyStream`
   |     no `BodyDataStream` in the root