Bumping gaia.json for 1 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/5216bb9e7d38
Author: Corey Frang <gnarf37@gmail.com>
Desc: Bug 931977 - [Keyboard] Ensure first keyboard shown is properly initialized - r=rudyl

- use the `setKeyboardName` during first keyboard load
- Renabled TBPL test

Closes gh-13192