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

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https://hg.mozilla.org/integration/gaia-central/rev/f7ad56628260
Author: Luke Chang <lchang@mozilla.com>
Desc: Merge pull request #24865 from weilonge/1078978-bug-GFB-contacts_search_uncheck

Bug 1078978 - When we checked all contacts then we searched a contact,the contact display uncheck, r=sergi

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https://hg.mozilla.org/integration/gaia-central/rev/1687e5f6507f
Author: Sean Lee <seanlee@macbook>
Desc: Bug 1078978 - When we checked all contacts then we searched a contact,the contact display uncheck.
Bumping manifests a=b2g-bump