[metrics-bugs] #31414 [Metrics/Cloud]: Review, fix and/or ignore linter errors found by cfn-lint

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#31414: Review, fix and/or ignore linter errors found by cfn-lint
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     Reporter:  irl            |      Owner:  metrics-team
         Type:  task           |     Status:  new
     Priority:  Medium         |  Milestone:
    Component:  Metrics/Cloud  |    Version:
     Severity:  Normal         |   Keywords:
Actual Points:                 |  Parent ID:
       Points:                 |   Reviewer:
      Sponsor:                 |
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 Example, maybe not the latest commit:
 https://dip.torproject.org/torproject/metrics/metrics-cloud/-/jobs/36

 The scripts work as far as they do what I intended them to, but maybe they
 use deprecated things or are fragile. This is not super urgent but it
 would be good to have this passing in GitLab so it's obvious when we
 introduce new errors.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31414>
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