[MISC] (deps): Bump github.com/valyala/fasthttp from 1.12.0 to 1.13.1

[dependabot-preview]

Bumps github.com/valyala/fasthttp from 1.12.0 to 1.13.1.

Release notes

Sourced from github.com/valyala/fasthttp's releases.

v1.13.1

• 2f92c68 Add timeouts to tls Handshake (Erik Dubbelboer)
• 123f6a8 Fix memory reusage bug with auth (Erik Dubbelboer)

v1.13.0

This release of fasthttp contains 3 backwards incompatible changes.

1. A HostClient can now only be used for a single protocol. If the HostClient is redirected to a different protocol it will return an error. Use Client instead if you need this functionality (dacd035).
2. ServeFile now return a redirect for directories without trailing slash instead of serving the directory listing (5bd1b0c)
3. ASCII control character are not allowed in URLs anymore (079f39b)

Commits:

• 339ad36 Add Brotli support (Erik Dubbelboer)
• dacd035 HostClient can't switch between protocols (Erik Dubbelboer)
• 5bd1b0c Make FS return a redirect for directories without trailing slash (#802) (Moritz Marquardt)
• 05d4602 Fix race condition in test (Erik Dubbelboer)
• 9507d7c Don't wrap conn with a TLS Client if it's already a TLS Conn (Erik Dubbelboer)
• dc6b9db Copy to the req.Header.userAgent from the defaultUserAgent (#796) (Julian Junxiang Zhou)
• 3294097 allow the expect 100 continue workflow to deny requests (#787) (Mike MacDermaid)
• 446e1a6 Fix .travis.yml (Erik Dubbelboer)
• 079f39b Don't allow ASCII control character in URLs (#790) (Erik Dubbelboer)
• 3e27d8e Fix integer overflow handling in parseUintBuf() (#789) (Ivan Mironov)
• 571315f Only base64 the proxy auth once (Erik Dubbelboer)
• 503e363 Remove unnecessary check (Erik Dubbelboer)

Commits

• 2f92c68 Add timeouts to tls Handshake
• 123f6a8 Fix memory reusage bug with auth
• 24410e5 Merge pull request #810 from valyala/brotli
• d22782d HostClient can't switch between protocols (#800)
• 5bd1b0c Make FS return a redirect for directories without trailing slash (#802)
• 05d4602 Fix race condition in test
• 339ad36 Add Brotli support
• 9507d7c Don't wrap conn with a TLS Client if it's already a TLS Conn
• dacd035 HostClient can't switch between protocols
• dc6b9db Copy to the req.Header.userAgent from the defaultUserAgent (#796)
• Additional commits viewable in compare view

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