Update Gettext to v0.26 #683

Job	Run time
ash-ci / mix deps.get	6m 57s
ash-ci / MIX_ENV=test mix.compile	4m 34s
ash-ci / audit	4m 49s
ash-ci / MIX_ENV=dev mix.compile	4m 25s
ash-ci / mix docs	31s
ash-ci / mix spark.cheat_sheets --check	34s
ash-ci / mix ash.codegen --check	0s
ash-ci / mix dialyzer	6m 3s
ash-ci / mix credo --strict	28s
ash-ci / mix format --check-formatted	28s
ash-ci / mix sobelow	27s
ash-ci / mix spark.formatter --check	26s
ash-ci / mix test	53s
ash-ci / mix deps.unlock --check-unused	24s
ash-ci / Deploy docs to GitHub pages.	0s
ash-ci / Release	0s
	30m 59s

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