Update github CI yaml

[mansona]

This just takes some inspiration from the default output of a new Ember addon 👍

[kategengler]

I suspect these timeouts won't work for the test suite

[mansona]

So this timeout is only for that particular test, and that test seems to be running in less than a minute so 10 mins is not so bad https://github.com/ember-cli/ember-try/actions/runs/4495038220/jobs/7908231867

The issue that we have is that any tests that hang will time out after 6 hours!! 😱 https://github.com/ember-cli/ember-try/actions/runs/4486271160/jobs/7888744453#step:6:1

I don't know who decided 6 hours was a reasonable default for a timeout but this PR now uses the "ember addon default" of 10 mins for normal tests and 20 mins for the longer smoke tests. And that will allow each test to run for 20 mins not a total running time for all scenarios 👍

[mansona]

The last run of this is a great example of what I mean. Because I fixed CI in #933 all the dependabot PRs updated at the same time and drained the available workers for this repo to run CI. The elapsed time of the last run was quite high because it was waiting for workers but only each individual job was bound by its own timeout 👍

[codecov]

Codecov Report

Merging #934 (064b399) into master (4540780) will not change coverage.
The diff coverage is n/a.

❗ Current head 064b399 differs from pull request most recent head 845726b. Consider uploading reports for the commit 845726b to get more accurate results

@@           Coverage Diff           @@
##           master     #934   +/-   ##
=======================================
  Coverage   94.36%   94.36%           
=======================================
  Files          17       17           
  Lines         550      550           
=======================================
  Hits          519      519           
  Misses         31       31           

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