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

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https://hg.mozilla.org/integration/gaia-central/rev/26b4d06af9d9
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #26072 from yzen/bug-1095825

Bug 1095825 - instead of checking settings app right away, account for a...

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https://hg.mozilla.org/integration/gaia-central/rev/7beef3589d32
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1095825 - instead of checking settings app right away, account for all the transitions and wait for it.
Bumping manifests a=b2g-bump