[metrics-bugs] #22652 [Metrics/metrics-lib]: Adapt CollecTor to metrics-lib 1.9.0

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#22652: Adapt CollecTor to metrics-lib 1.9.0
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     Reporter:  iwakeh               |      Owner:  metrics-team
         Type:  enhancement          |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Metrics/metrics-lib  |    Version:
     Severity:  Normal               |   Keywords:
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 This focuses on the changes made in #22141.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22652>
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