Bump github.com/valyala/fasthttp from 1.26.0 to 1.28.0

Bumps [github.com/valyala/fasthttp](https://github.com/valyala/fasthttp) from 1.26.0 to 1.28.0.
- [Release notes](https://github.com/valyala/fasthttp/releases)
- [Commits](valyala/fasthttp@v1.26.0...v1.28.0)

---
updated-dependencies:
- dependency-name: github.com/valyala/fasthttp
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/prometheus/client_golang v1.11.0
 	github.com/stretchr/testify v1.7.0
 	github.com/urfave/negroni v1.0.0
-	github.com/valyala/fasthttp v1.27.0
+	github.com/valyala/fasthttp v1.28.0
 	go.opencensus.io v0.23.0
 	goji.io v2.0.2+incompatible
 )

go.sum

@@ -349,8 +349,9 @@ github.com/urfave/negroni v1.0.0 h1:kIimOitoypq34K7TG7DUaJ9kq/N4Ofuwi1sjz0KipXc=
 github.com/urfave/negroni v1.0.0/go.mod h1:Meg73S6kFm/4PpbYdq35yYWoCZ9mS/YSx+lKnmiohz4=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-github.com/valyala/fasthttp v1.27.0 h1:gDefRDL9aqSiwXV6aRW8aSBPs82y4KizSzHrBLf4NDI=
 github.com/valyala/fasthttp v1.27.0/go.mod h1:cmWIqlu99AO/RKcp1HWaViTqc57FswJOfYYdPJBl8BA=
+github.com/valyala/fasthttp v1.28.0 h1:ruVmTmZaBR5i67NqnjvvH5gEv0zwHfWtbjoyW98iho4=
+github.com/valyala/fasthttp v1.28.0/go.mod h1:cmWIqlu99AO/RKcp1HWaViTqc57FswJOfYYdPJBl8BA=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
 github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=