Update Rust crate tower-http to v0.5.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tower-http	dependencies	patch	=0.5.0 -> =0.5.1

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Release Notes

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

v0.5.1: v0.5.1

Compare Source

• fs: Support files precompressed with zstd in ServeFile
• trace: Add default generic parameters for ResponseBody and ResponseFuture (#​455)
• trace: Add type aliases HttpMakeClassifier and GrpcMakeClassifier (#​455)

Fixed

• cors: Keep Vary headers set by the inner service when setting response headers (#​398)
• fs: ServeDir now no longer redirects from /directory to /directory/
  if append_index_html_on_directories is disabled (#​421)

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