fixed a bug that caused tick marks to not render without labels

[ennerf]

See #701

.axis .axis-tick-label {
  visibility: hidden;
}

.axis .axis-major-tick-mark, .axis .axis-minor-tick-mark {
  visibility: hidden;
}

.axis .axis-tick-label {
  visibility: visible;
}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[RalphSteinhagen]

Thanks @ennerf for the fix. Looks good and seems to do the job (I assume you've tested more thoroughly than I can 😃).

[ennerf]

It looks like there is a problem with the CI checks

[wirew0rm]

It looks like there is a problem with the CI checks

This is just because the PR comes from an external repo, so it cannot access CI tokens and upload to the snapshot repository. Same for codecov and restyled needs to be switched to use their github action since they stopped hosting their own CI for this.
Should all not be relevant to this PR.

The changes look good, thanks for following this up 👍