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

========

https://hg.mozilla.org/integration/gaia-central/rev/25d6f0f7e2b9
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Merge pull request #16236 from dominickuo/bug-948363

Bug 948363 - [Music] handle data transfer for nfc, r=dominickuo

========

https://hg.mozilla.org/integration/gaia-central/rev/cc4f15cd42d4
Author: s.x.veerapandian <s.x.veerapandian@bdc7-d-2tcc7bs.(none)>
Desc: Bug 948363 - [Music] handle data transfer for nfc
Bumping manifests a=b2g-bump