Bump github.com/prometheus/exporter-toolkit from 0.8.0 to 0.8.1

Bumps [github.com/prometheus/exporter-toolkit](https://github.com/prometheus/exporter-toolkit) from 0.8.0 to 0.8.1.
- [Release notes](https://github.com/prometheus/exporter-toolkit/releases)
- [Changelog](https://github.com/prometheus/exporter-toolkit/blob/master/CHANGELOG.md)
- [Commits](prometheus/exporter-toolkit@v0.8.0...v0.8.1)

---
updated-dependencies:
- dependency-name: github.com/prometheus/exporter-toolkit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/prometheus/client_golang v1.13.0
 	github.com/prometheus/common v0.37.0
-	github.com/prometheus/exporter-toolkit v0.8.0
+	github.com/prometheus/exporter-toolkit v0.8.1
 	github.com/sebdah/goldie/v2 v2.5.3
 	golang.org/x/sync v0.1.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6

go.sum

@@ -198,8 +198,8 @@ github.com/prometheus/common v0.26.0/go.mod h1:M7rCNAaPfAosfx8veZJCuw84e35h3Cfd9
 github.com/prometheus/common v0.32.1/go.mod h1:vu+V0TpY+O6vW9J44gczi3Ap/oXXR10b+M/gUGO4Hls=
 github.com/prometheus/common v0.37.0 h1:ccBbHCgIiT9uSoFY0vX8H3zsNR5eLt17/RQLUvn8pXE=
 github.com/prometheus/common v0.37.0/go.mod h1:phzohg0JFMnBEFGxTDbfu3QyL5GI8gTQJFhYO5B3mfA=
-github.com/prometheus/exporter-toolkit v0.8.0 h1:LyrXZwom1xyRVNKA8i5L4HzZ6GmCBqMMIDyZW/G2+us=
-github.com/prometheus/exporter-toolkit v0.8.0/go.mod h1:00shzmJL7KxcsabLWcONwpyNEuWhREOnFqZW7vadFS0=
+github.com/prometheus/exporter-toolkit v0.8.1 h1:TpKt8z55q1zF30BYaZKqh+bODY0WtByHDOhDA2M9pEs=
+github.com/prometheus/exporter-toolkit v0.8.1/go.mod h1:00shzmJL7KxcsabLWcONwpyNEuWhREOnFqZW7vadFS0=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=