build(deps): bump chart.js from 2.9.4 to 3.0.2 in /web (#696)

* build(deps): bump chart.js from 2.9.4 to 3.0.2 in /web

Bumps [chart.js](https://github.com/chartjs/Chart.js) from 2.9.4 to 3.0.2.
- [Release notes](https://github.com/chartjs/Chart.js/releases)
- [Commits](https://github.com/chartjs/Chart.js/compare/v2.9.4...v3.0.2)

Signed-off-by: dependabot[bot] <support@github.com>

* web/elements/chart: upgrade to chart.js 3

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jens Langhammer <jens.langhammer@beryju.org>

web/src/authentik.css

@@ -129,7 +129,6 @@ body {
         --pf-c-card--BackgroundColor: var(--ak-dark-background-light);
     }
     .pf-c-card__title,
-    .pf-c-card__header-main,
     .pf-c-card__body {
         color: var(--ak-dark-foreground);
     }