fix: suppress module conflict warning when running upgrade_igniter #716

Job	Run time
ash-ci / mix deps.get	20s
ash-ci / audit	30s
ash-ci / mix igniter.upgrade	0s
ash-ci / MIX_ENV=test mix.compile	23s
ash-ci / mix docs	19s
ash-ci / mix credo --strict	4s
ash-ci / mix ash.codegen --check	0s
ash-ci / MIX_ENV=dev mix.compile	28s
ash-ci / Deploy docs to GitHub pages.	3s
ash-ci / mix dialyzer	2m 26s
ash-ci / mix format --check-formatted	19s
ash-ci / mix sobelow	4s
ash-ci / mix spark.cheat_sheets --check	6s
ash-ci / mix spark.formatter --check	6s
ash-ci / mix test	1m 35s
ash-ci / mix deps.unlock --check-unused	28s
ash-ci / Release	0s
	7m 11s

Provide feedback