build(deps): bump github.com/prometheus/client_golang from 1.7.1 to 1.8.0

[dependabot[bot]]

Bumps github.com/prometheus/client_golang from 1.7.1 to 1.8.0.

Release notes

Sourced from github.com/prometheus/client_golang's releases.

1.8.0 / 2020-10-15

• [CHANGE] API client: Use time.Time rather than string for timestamps in RuntimeinfoResult. #777
• [FEATURE] Export MetricVec to facilitate implementation of vectors of custom Metric types. #803
• [FEATURE API client: Support /status/tsdb endpoint. #773
• [ENHANCEMENT] API client: Enable GET fallback on status code 501. #802
• [ENHANCEMENT] Remove Metric references after reslicing to free up more memory. #784

Changelog

Sourced from github.com/prometheus/client_golang's changelog.

1.8.0 / 2020-10-15

• [CHANGE] API client: Use time.Time rather than string for timestamps in RuntimeinfoResult. #777
• [FEATURE] Export MetricVec to facilitate implementation of vectors of custom Metric types. #803
• [FEATURE API client: Support /status/tsdb endpoint. #773
• [ENHANCEMENT] API client: Enable GET fallback on status code 501. #802
• [ENHANCEMENT] Remove Metric references after reslicing to free up more memory. #784

Commits

• 47cfdc9 Merge pull request #806 from prometheus/beorn7/release
• 67f573a Cut v1.8.0
• ded2474 Update dependencies
• 3d1759b Run check for unused/missing Go packages only against latest Go version
• e6ea98b Merge pull request #803 from prometheus/beorn7/vec
• 85aa957 Export MetricVec (again)
• 6007b2b Merge pull request #802 from prometheus/beorn7/fallback
• 64b4a9c API client: Enable fallback on status code 501, too
• 65c5578 Merge pull request #800 from prometheus/beorn7/doc
• b54b73c Remove spurious commas from links to the docs site
• Additional commits viewable in compare view

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