[Snyk] Upgrade prom-client from 11.3.0 to 11.5.3

[kkouchtii]

Snyk has created this PR to upgrade prom-client from 11.3.0 to 11.5.3.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 5 versions ahead of your current version.

• The recommended version was released on 5 years ago.

Release notes

Package name: prom-client

• 11.5.3 - 2019-06-27
  

  11.5.3

• 11.5.2 - 2019-06-20
  

  Changed

  • fix: avoid mutation bug in registry
• 11.5.1 - 2019-06-13
  

  Changed

  • fix: guard against missing constructor
• 11.5.0 - 2019-06-04
  

  Added

  • Added timestamps toggle to collectDefaultMetrics options
  • Export validateMetricName
• 11.4.0 - 2019-06-04
  

  Added

  • nodejs_active_handles metric to the collectDefaultMetrics(). Unlike nodejs_active_handles_total it split count of active handles by type.
  • nodejs_active_requests metric to the collectDefaultMetrics(). Unlike nodejs_active_requests_total it split count of active requests by type.
• 11.3.0 - 2019-04-02
  

  Changed

  • Check that cluster worker is still connected before attempting to query it for
    metrics. (#244)

  Added

  • Added a remove() method on each metric type, based on Prometheus "Writing Client Libraries" section on labels

from prom-client GitHub release notes

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