Update to work with phoenix_live_dashboard 0.8

[moxley]

After updating from phoenix 1.7.3 to 1.7.6, we started seeing warnings appear in the output of our tests:

warning: Passing "connect_info" directly to connect/3 is deprecated, please pass "connect_info: ..." as an option instead
  (phoenix 1.7.6) lib/phoenix/test/channel_test.ex:329: Phoenix.ChannelTest.__connect__/4
  (phoenix_live_view 0.18.18) lib/phoenix_live_view/test/live_view_test.ex:1140: Phoenix.LiveViewTest.start_upload_client/6

Here are our relevant dependencies:

• phoenix 1.7.6
• phoenix_live_dashboard 0.7.2
• phoenix_live_view 0.18.18
• broadway_dashboard 0.3.0

Since phoenix_live_view 0.18.18 was apparently the culprit, I tried updating it to the latest version, 0.19.3. Then phoenix_live_dashboard 0.7.2 wouldn't work with 0.19.x, so I tried upgrading phoenix_live_dashboard to the latest, version 0.8.0. Then, broadway_dashboard wouldn't work with that, because it only supports up to 0.7.x. It uses a now-removed API within phoenix_live_dashboard.

Incidentally, phoenix_profiler has the same phoenix_live_dashboard API issue, and I opened a PR for that as well.

This PR updates broadway_dashboard to use the new phoenix_live_dashboard API, but does this satisfy your versioning requirements? This PR makes broadway_dashboard require at least phoenix_live_dashboard 0.8.

TODO

• [x] Fix layout bug introduced in this PR
• [x] Finish manually testing UI

[josevalim]

Everything is perfect so far @moxley, thank you. It is fine to depend on latest dashboard, please let us know when this is ready to merge or if you have any other questions.

[moxley]

Thanks @josevalim. I resolved the remaining issue, and this is now ready to merge.

[philss]

@moxley thank you! :purple_heart: