[metrics-bugs] #31645 [Metrics]: Add metrics-lib's master branch to GitLab's CI

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#31645: Add metrics-lib's master branch to GitLab's CI
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 Reporter:  irl          |          Owner:  metrics-team
     Type:  enhancement  |         Status:  needs_review
 Priority:  Medium       |      Milestone:
Component:  Metrics      |        Version:
 Severity:  Normal       |     Resolution:
 Keywords:               |  Actual Points:
Parent ID:  #31398       |         Points:
 Reviewer:               |        Sponsor:
-------------------------+------------------------------
Changes (by irl):

 * status:  new => needs_review
 * type:  defect => enhancement


Comment:

 Please review https://dip.torproject.org/irl/metrics-
 lib/commit/4d8a8ea711828325371b9ec351021b7739ea06ac

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31645#comment:1>
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