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

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https://hg.mozilla.org/integration/gaia-central/rev/26034bd65616
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #26810 from crh0716/1103894

Bug 1103894 - Use DialogService to display the warning dialog r=eragonj

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https://hg.mozilla.org/integration/gaia-central/rev/1b251c44395a
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1103894 - Use DialogService to display the warning dialog
Bumping manifests a=b2g-bump