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

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https://hg.mozilla.org/integration/gaia-central/rev/345bf662aca9
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25931 from mancas/bug1089505

Bug 1089505 - [NFC][Software Home Button] yes/no button covered by SW ho...

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https://hg.mozilla.org/integration/gaia-central/rev/83b031c59c8b
Author: mancas <manuel.casasbarrado@telefonica.com>
Desc: Bug 1089505 - [NFC][Software Home Button] yes/no button covered by SW home button
Bumping manifests a=b2g-bump