bump allowed failure

[nstarman]

Signed-off-by: nstarman nstarkman@protonmail.com

Checklist for package maintainer(s)

This checklist is meant to remind the package maintainer(s) who will review this pull request of some common things to look for. This list is not exhaustive.

• [ ] Do the proposed changes actually accomplish desired goals?
• [ ] Do the proposed changes follow the Astropy coding guidelines?
• [ ] Are tests added/updated as required? If so, do they follow the Astropy testing guidelines?
• [ ] Are docs added/updated as required? If so, do they follow the Astropy documentation guidelines?
• [ ] Is rebase and/or squash necessary? If so, please provide the author with appropriate instructions. Also see "When to rebase and squash commits".
• [ ] Did the CI pass? If no, are the failures related? If you need to run daily and weekly cron jobs as part of the PR, please apply the Extra CI label.
• [ ] Is a change log needed? If yes, did the change log check pass? If no, add the no-changelog-entry-needed label. If this is a manual backport, use the skip-changelog-checks label unless special changelog handling is necessary.
• [ ] Is a milestone set? Milestone must be set but astropy-bot check might be missing; do not let the green checkmark fool you.
• [ ] At the time of adding the milestone, if the milestone set requires a backport to release branch(es), apply the appropriate backport-X.Y.x label(s) before merge.

[codecov[bot]]

Codecov Report

Merging #7 (3ea1586) into main (aabd839) will decrease coverage by 0.13%. The diff coverage is 60.00%.

@@            Coverage Diff             @@
##             main       #7      +/-   ##
==========================================
- Coverage   96.51%   96.38%   -0.14%     
==========================================
  Files          12       12              
  Lines        1408     1412       +4     
==========================================
+ Hits         1359     1361       +2     
- Misses         49       51       +2     

Impacted Files	Coverage Δ
interpolated_coordinates/utils/spline.py	92.98% <60.00%> (-1.57%)	:arrow_down:

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