build(deps): bump the patches group with 1 update

Bumps the patches group with 1 update: [github.com/gorilla/mux](https://github.com/gorilla/mux).

- [Release notes](https://github.com/gorilla/mux/releases)
- [Commits](https://github.com/gorilla/mux/compare/v1.8.0...v1.8.1)

---
updated-dependencies:
- dependency-name: github.com/gorilla/mux
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patches
...

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

go.mod

@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/go-kit/kit v0.13.0
-	github.com/gorilla/mux v1.8.0
+	github.com/gorilla/mux v1.8.1
 	github.com/influxdata/influxdb1-client v0.0.0-20220302092344-a9ab5670611c
 	github.com/itzg/go-flagsfiller v1.13.1
 	github.com/juju/ratelimit v1.0.2