Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/2ec5f9107d3c
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #15886 from ltedone/Bug_933542-Slovak_keyboard_is_missing_the_special_characters_master

Bug 933542 - Added special characters to Slovak keyboard. r=janjongboom

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https://hg.mozilla.org/integration/gaia-central/rev/7caa4c302622
Author: Luigi Tedone <luigitedone@gmail.com>
Desc: Bug 933542 - Added special characters to Slovak keyboard
Bumping manifests a=b2g-bump