Revert "moved data/langs/he_IL.txt -> data/langs/he-IL.txt to better conform...

Revert "moved data/langs/he_IL.txt -> data/langs/he-IL.txt to better conform with existing translations."

This reverts commit d8ca9f47.

This touches way more than advertised.
10 jobs for master in 25 minutes and 34 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
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librem5
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  Test
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librem5
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