Bump ember-metrics from `1963fc0` to `4812124` in /frontend
Bump ember-metrics from `1963fc0` to `4812124` in /frontend

Bumps [ember-metrics](https://github.com/poteto/ember-metrics) from `1963fc0` to `4812124`.
- [Release notes](https://github.com/poteto/ember-metrics/releases)
- [Commits](https://github.com/poteto/ember-metrics/compare/1963fc05cbc15c1109b32e7f436962033e61c5f0...48121240879f9a8d8fd28d9bbf996fc616004185)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
roschaefer/rundfunk-mitbestimmen,roschaefer/rundfunk-mitbestimmen,roschaefer/rundfunk-mitbestimmen