"Stale" GitHub action fails due to error in YAML config file

[yantosca]

Your name

Bob Yantosca

Your affiliation

Harvard + GCST

What happened? What did you expect to happen?

The GitHub action that marks stale issues is failing due to an error in the YAML file.

See: https://github.com/geoschem/geos-chem/actions/runs/9342363070/workflow

What are the steps to reproduce the bug?

The error happens when the GitHub action runs at regular intervals

What GEOS-Chem version were you using?

14.4.0

What environment were you running GEOS-Chem on?

Other (please explain below)

What compiler and version were you using?

This is a GitHub-related issue and so was not using a compiler

Will you be addressing this bug yourself?

Yes

In what configuration were you running GEOS-Chem?

GCClassic

What simulation were you running?

Full chemistry

As what resolution were you running GEOS-Chem?

N/A

What meterology fields did you use?

GEOS-FP

Additional information

I can disable the stale workflow for the time being. We can issue a fix (along with other no-diff updates) in 14.4.1.

[yantosca]

The problem is that the YAML tag exempt-issue-labels expects a comma-separated list, not a YAML sequence. We will push a fix to the no-diff-to-benchmark branch.

[yantosca]

We have now merged the fixes into the dev/no-diff-to-benchmark branches of the various repos. We can now close this issue.