Update module gorilla/mux to v1.7.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/gorilla/mux	require	patch	v1.7.3 -> v1.7.4

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Release Notes

gorilla/mux

v1.7.4

Compare Source

v1.7.4 addresses a number of performance improvements (#​544), bugs (#​509, #​535), and documentation improvements.

CHANGELOG

• Reduce allocations in (*routeRegexp).getURLQuery (#​544) @​klauspost
• Fixed golint warnings (#​526) @​KosToZyB
• fix headers regexp test case (#​536) @​icattlecoder
• Fix the CORSMethodMiddleware bug with subrouters (#​535) @​fharding1
• Remove/cleanup request context helpers (#​525) @​fharding1
• Guess the scheme if r.URL.Scheme is unset (#​474) @​euank
• Added capacity to slice creation, when capacity is known (#​516) @​vivekv96
• Modified http status codes, using constants provided by the http package (#​514) @​vivekv96
• bugfix/subrouter custom methodNotAllowed handler returning 404 (#​509) (#​510) @​jonasdebeukelaer
• Update README (self-host logo) (#​513) @​elithrar
• Remove TravisCI badge (#​503) @​elithrar
• Add documentation for using mux to serve a SPA (#​493) @​fharding1
• Simplify code (#​501) @​muesli
• Avoid unnecessary conversion (#​502) @​muesli
• Update config.yml (#​495) @​elithrar

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻️ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
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The artifact failure details are included below:

File name: go.sum

Command failed: docker run --rm --name=renovate_go --label=renovate_child -v "/mnt/renovate/gh/golangci/golangci-api":"/mnt/renovate/gh/golangci/golangci-api" -v "/tmp/renovate-cache":"/tmp/renovate-cache" -v "/tmp/renovate-cache/others/go":"/tmp/renovate-cache/others/go" -e GOPATH -e CGO_ENABLED -w "/mnt/renovate/gh/golangci/golangci-api" renovate/go bash -l -c "git config --global url.\"https://x-access-token:**redacted**@github.com/\".insteadOf \"https://github.com/\" && go get -d ./..."
go: downloading github.com/golangci/golangci-lint v1.20.0
go: downloading golang.org/x/tools v0.0.0-20190930201159-7c411dea38b0
go: downloading github.com/gorilla/mux v1.7.4
go: downloading gopkg.in/yaml.v2 v2.2.4
go: extracting github.com/gorilla/mux v1.7.4
go: extracting gopkg.in/yaml.v2 v2.2.4
verifying github.com/golangci/golangci-lint@v1.20.0: checksum mismatch
	downloaded: h1:BRmroXvnikbTCJJ+wbBgbt2kfbDC5RGONSK8xL9D6eo=
	go.sum:     h1:bokjFHRgut7TT9YiKSVWVscWfZNs1fQgSz94geGPHJw=

SECURITY ERROR
This download does NOT match an earlier download recorded in go.sum.
The bits may have been replaced on the origin server, or an attacker may
have intercepted the download attempt.

For more information, see 'go help module-auth'.