Use correct time zone for dates

[Intrepidd]

ActiveJob::Core sets the enqueued_at property in UTC : https://github.com/rails/rails/blob/a2d2155e0ecdf18c469ccdfd28ca225fd7a42795/activejob/lib/active_job/core.rb#L119

Some other properties such as finished_at are set in the current time zone.

To make sure we compare times within the same time zone, this PR ensures all datetimes displayed are in_time_zone

[rosa]

Thanks @Intrepidd! I wonder if the best solution would be to ensure finished_at uses UTC as well 🤔 Since we show times like enqueued_at using UTC 🤔

[Intrepidd]

This is up to the underlying adapter, for solid queue since it uses active record and will set created_at et al in the configured time zone, this makes sense to me to stay consistent.

But in any case we want to see times in our zone in Mission Control 🙏