Update Rust crate tower-http to v0.6.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tower-http	dependencies	patch	=0.6.3 -> =0.6.4

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Release Notes

tower-rs/tower-http (tower-http)

v0.6.4: tower-http 0.6.4

Compare Source

Added

• decompression: Support HTTP responses containing multiple ZSTD frames (#​548)
• The ServiceExt trait for chaining layers onto an arbitrary http service just
  like ServiceBuilderExt allows for ServiceBuilder (#​563)

Fixed

• Remove unnecessary trait bounds on S::Error for Service impls of
  RequestBodyTimeout<S> and ResponseBodyTimeout<S> (#​533)
• compression: Respect is_end_stream (#​535)
• Fix a rare panic in fs::ServeDir (#​553)
• Fix invalid content-lenght of 1 in response to range requests to empty
  files (#​556)
• In AsyncRequireAuthorization, use the original inner service after it is
  ready, instead of using a clone (#​561)

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