[metrics-bugs] #32442 [Metrics/Library]: Release metrics-lib 2.9.1

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#32442: Release metrics-lib 2.9.1
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     Reporter:  karsten          |      Owner:  karsten
         Type:  task             |     Status:  assigned
     Priority:  Medium           |  Milestone:
    Component:  Metrics/Library  |    Version:
     Severity:  Normal           |   Keywords:
Actual Points:                   |  Parent ID:
       Points:                   |   Reviewer:
      Sponsor:                   |
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 We need a quick release for metrics-lib to recognize CollecTor's
 index.json files with additional fields. We do not care about those
 fields, but currently we fail when encountering unknown fields, which is
 really bad. We can later start parsing those fields, but for the moment
 (and for the future) it's only necessary to ignore any fields we do not
 recognize. Putting out the release now.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32442>
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