build(deps): bump github.com/go-kit/log (#10827)

Bumps [github.com/go-kit/log](https://github.com/go-kit/log) from 0.2.0 to 0.2.1.
- [Release notes](https://github.com/go-kit/log/releases)
- [Commits](https://github.com/go-kit/log/compare/v0.2.0...v0.2.1)

---
updated-dependencies:
- dependency-name: github.com/go-kit/log
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

documentation/examples/remote_storage/go.mod

@@ -3,7 +3,7 @@ module github.com/prometheus/prometheus/documentation/examples/remote_storage
 go 1.17
 
 require (
-	github.com/go-kit/log v0.2.0
+	github.com/go-kit/log v0.2.1
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/snappy v0.0.4
 	github.com/influxdata/influxdb v1.9.5

documentation/examples/remote_storage/go.sum

@@ -458,8 +458,9 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.10.0/go.mod h1:xUsJbQ/Fp4kEt7AFgCuvyX4a71u8h9jB8tj/ORgOZ7o=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
-github.com/go-kit/log v0.2.0 h1:7i2K3eKTos3Vc0enKCfnVcgHh2olr/MyfboYq7cAcFw=
 github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
+github.com/go-kit/log v0.2.1 h1:MRVx0/zhvdseW+Gza6N9rVzU/IVzaeE1SFI4raAhmBU=
+github.com/go-kit/log v0.2.1/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=