Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/6fa1c6e992e9
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #23343 from RudyLu/keyboard/Bug1053647

Bug 1053647 - [Keyboard] Auto correct improvement.
r=rudylu.

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https://hg.mozilla.org/integration/gaia-central/rev/141af01d3491
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 1053647 - fix the failing python integration tests.

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https://hg.mozilla.org/integration/gaia-central/rev/4c50b25742dc
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 1053647: delete space when reverting an autocorrection and don't insert space when user selects a word suggestion

disable autocorrection when reverting a selected word suggestion
Bumping manifests a=b2g-bump