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

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https://hg.mozilla.org/integration/gaia-central/rev/16ec72f2ebc4
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #24366 from pivanov/bug-1070861

Bug 1070861 - [FTU] Wifi searching icon moves

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https://hg.mozilla.org/integration/gaia-central/rev/dac6a46693ed
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1070861 - [FTU] Wifi searching icon moves
Bumping manifests a=b2g-bump