Bump github.com/prometheus/client_golang from 1.5.0 to 1.5.1
Bump github.com/prometheus/client_golang from 1.5.0 to 1.5.1

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.5.0 to 1.5.1.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.5.0...v1.5.1)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
martin-helmich/prometheus-nginxlog-exporter,martin-helmich/prometheus-nginxlog-exporter,martin-helmich/prometheus-nginxlog-exporter