Bump github.com/prometheus/client_golang from 1.14.0 to 1.15.1

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.14.0 to 1.15.1.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.14.0...v1.15.1)

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

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

vendor/google.golang.org/protobuf/internal/encoding/json/decode.go

@@ -294,7 +294,7 @@ func (d *Decoder) isValueNext() bool {
 }
 
 // consumeToken constructs a Token for given Kind with raw value derived from
-// current d.in and given size, and consumes the given size-lenght of it.
+// current d.in and given size, and consumes the given size-length of it.
 func (d *Decoder) consumeToken(kind Kind, size int) Token {
 	tok := Token{
 		kind: kind,