fix: allow spaces in cli string slices

[Gusted]

In v3.8.0 the following was parsed correctly:

WOODPECKER_PLUGINS_PRIVILEGED="docker.io/woodpeckerci/plugin-docker-buildx:latest, docker.io/woodpeckerci/plugin-docker-buildx:6.0.2"

But in v3.9.0 this would not be parsed correctly and results in the following linter error:

The formerly privileged plugin `woodpeckerci/plugin-docker-buildx:6.0.2` is no longer privileged by default, if required, add it to `WOODPECKER_PLUGINS_PRIVILEGED`

Regression of 59a855c

[qwerty287]

Thanks!

I guess we have more like this (the StringSliceFlag, I'm not sure if we have more but I'd be surprised if not), could you update this as well? If not I can take care of in the next days.

[woodpecker-bot]

Surge PR preview deployment succeeded. View it at https://woodpecker-ci-woodpecker-pr-5494.surge.sh

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 26.43%. Comparing base (3a0d225) to head (e922663).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5494      +/-   ##
==========================================
+ Coverage   26.41%   26.43%   +0.01%     
==========================================
  Files         404      404              
  Lines       28842    28842              
==========================================
+ Hits         7620     7625       +5     
+ Misses      20527    20522       -5     
  Partials      695      695              

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