chore(deps-dev): bump igniter from 0.6.7 to 0.6.20 in the dev-dependencies group #20

Job	Run time
ash-ci / audit	1m 26s
ash-ci / MIX_ENV=test mix.compile	1m 19s
ash-ci / Community Files Check	3s
ash-ci / Report Mix Dependencies	0s
ash-ci / mix igniter.upgrade	0s
ash-ci / mix format --check-formatted	20s
ash-ci / mix spark.cheat_sheets --check	41s
ash-ci / mix deps.unlock --check-unused	21s
ash-ci / mix sobelow	5s
ash-ci / mix test	48s
ash-ci / MIX_ENV=dev mix.compile	1m 15s
ash-ci / mix dialyzer	3m 25s
ash-ci / mix spark.formatter --check	30s
ash-ci / mix credo --strict	59s
ash-ci / mix ash.codegen --check	-1s
ash-ci / mix git_ops.check_message	-1s
ash-ci / mix doctor --full --raise	-1s
ash-ci / mix docs	1m 15s
ash-ci / Deploy docs to GitHub pages.	0s
ash-ci / NIF ${{ matrix.nif }} - ${{ matrix.job.target }} (${{ matrix.job.os }})	-1s
ash-ci / Release	-1s
	12m 22s

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