[6] Move the Tasks group over to the tox gen script

[sentrivana]

• remove hardcoded entries for celery, spark, huey, dramatiq from the tox template
• remove them from the ignore list in populate_tox.py
• run populate_tox.py to fill in entries for them
• run split_gh_tox_actions.py to generate the CI yaml files so that they correspond to the new tox.ini

The remaining integrations in this group are not trivial to switch over to the script, I'll do this step by step in follow-up PRs.

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
22869	1	22868	5798

View the top 1 failed test(s) by shortest run time

tests.integrations.stdlib.test_httplib test_http_timeout

Stack Traces | 20.6s run time

.../integrations/stdlib/test_httplib.py:419: in test_http_timeout
    assert len(transaction["spans"]) == 1
E   assert 2 == 1
E     +2
E     -1

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[szokeasaurusrex]

Thanks for clarifying