Igniter task to install Phoenix #719

Job	Run time
ash-ci / audit	5m 27s
ash-ci / mix deps.get	4m 38s
ash-ci / mix igniter.upgrade	0s
ash-ci / MIX_ENV=test mix.compile	3m 8s
ash-ci / mix docs	3m 8s
ash-ci / mix credo --strict	4s
ash-ci / MIX_ENV=dev mix.compile	57s
ash-ci / mix ash.codegen --check	0s
ash-ci / Deploy docs to GitHub pages.	0s
ash-ci / mix dialyzer	5m 14s
ash-ci / mix format --check-formatted	21s
ash-ci / mix sobelow	6s
ash-ci / mix spark.cheat_sheets --check	4s
ash-ci / mix spark.formatter --check	3s
ash-ci / mix test	1m 23s
ash-ci / mix deps.unlock --check-unused	22s
ash-ci / Release	0s
	24m 55s

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