[hotfix] fix CI on PRs from forks

[zacharyburnett]

This PR addresses the issue where PRs from forks cannot run because they don't have access to the DD_API_KEY organizational secret.

Hotfix for #615

Checklist

• added entry in CHANGES.rst under the corresponding subsection
• updated relevant tests
• updated relevant documentation
• updated relevant milestone(s)
• added relevant label(s)

[codecov]

Codecov Report

Base: 79.42% // Head: 79.42% // No change to project coverage 👍

Coverage data is based on head (d04adee) compared to base (4ddb138).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #617   +/-   ##
=======================================
  Coverage   79.42%   79.42%           
=======================================
  Files          41       41           
  Lines        1244     1244           
=======================================
  Hits          988      988           
  Misses        256      256           

Flag	Coverage Δ		*Carryforward flag
nightly	79.42% <ø> (ø)		Carriedforward from 67d9e1a
unit	46.31% <ø> (ø)

*This pull request uses carry forward flags. Click here to find out more.

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