Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/c4fc012f0253
Author: Min-Zhong "John" Lu <jlu@mozilla.com>
Desc: Merge pull request #24241 from sv99/1070487

Bug 1070487 - [keyboard] unit test refactoring for new version chai.assert api. r=rudyl, f=mnjul.

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https://hg.mozilla.org/integration/gaia-central/rev/acbf81b4041c
Author: sv99 <sv99@inbox.ru>
Desc: Bug 1070487 - [keyboard] unit test refactoring for new version chai.assert api

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https://hg.mozilla.org/integration/gaia-central/rev/63376ce93e86
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #24462 from jmcanterafonseca/fix_link_header

Bug 1072203 - [Contacts] [Facebook] Friends list proposal for linking se...

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https://hg.mozilla.org/integration/gaia-central/rev/65fdcda67c09
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1072203 - [Contacts] [Facebook] Friends list proposal for linking seems to be visually incorrect
Bumping manifests a=b2g-bump