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

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https://hg.mozilla.org/integration/gaia-central/rev/45c3042f27f6
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #20449 from julienw/1024542-wait-blob-loading-before-answering

Bug 1024542 - [Messages] in the desktop-fallback for mozContacts, wait t...

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https://hg.mozilla.org/integration/gaia-central/rev/58352726ac47
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1024542 - [Messages] in the desktop-fallback for mozContacts, wait to get the blob before returning anything r=schung
Bumping manifests a=b2g-bump