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

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https://hg.mozilla.org/integration/gaia-central/rev/b19639804a92
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #23593 from comoyo/bug1053647-revert

Revert "Bug 1053647: delete space when reverting an autocorrection and don't insert space when user selects a word suggestion"

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https://hg.mozilla.org/integration/gaia-central/rev/2e4981c1e41a
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Revert "Bug 1053647: delete space when reverting an autocorrection and don't insert space when user selects a word suggestion"

This reverts commit c547fb031f27b28c1134f1d4c21e9d0b93f77c91.
Bumping manifests a=b2g-bump