fix(mergify): needs-work label handling

[sileht]

As we can see here: #799, warn on needs-work and remove needs-work label if not needed rule are fighting each other to manage the label needs-work.

This change makes the CI list explicit, to set/unset needs-work as expected.

[codecov]

Codecov Report

Merging #810 (42ecd30) into master (0f04942) will increase coverage by 5.07%.
The diff coverage is 61.37%.

❗ Current head 42ecd30 differs from pull request most recent head dbbba0d. Consider uploading reports for the commit dbbba0d to get more accurate results

@@            Coverage Diff             @@
##           master     #810      +/-   ##
==========================================
+ Coverage   49.27%   54.34%   +5.07%     
==========================================
  Files          23       23              
  Lines        2401     3682    +1281     
==========================================
+ Hits         1183     2001     +818     
- Misses       1090     1529     +439     
- Partials      128      152      +24     

Impacted Files	Coverage Δ
pkg/container/docker_build.go	0.00% <0.00%> (ø)
pkg/container/docker_run.go	2.86% <0.00%> (+0.93%)	⬆️
pkg/common/git.go	49.82% <31.81%> (-9.97%)	⬇️
pkg/runner/runner.go	70.73% <38.46%> (-5.74%)	⬇️
pkg/model/planner.go	49.78% <42.50%> (+16.70%)	⬆️
pkg/model/workflow.go	52.14% <63.63%> (+26.42%)	⬆️
pkg/container/docker_pull.go	36.36% <64.00%> (+18.18%)	⬆️
pkg/runner/expression.go	85.71% <72.09%> (-0.93%)	⬇️
pkg/runner/step_context.go	79.48% <79.05%> (+10.53%)	⬆️
pkg/runner/run_context.go	81.85% <91.08%> (+5.44%)	⬆️
... and 25 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b1e4844...dbbba0d. Read the comment docs.

[mergify]

@sileht this pull request has failed checks 🛠