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

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https://hg.mozilla.org/integration/gaia-central/rev/e2352010e271
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Merge pull request #17926 from justindarc/bug987609

Bug 987609 - [Camera][Madai][UX] Gallery/preview Image number should be ...

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https://hg.mozilla.org/integration/gaia-central/rev/a26aeba93555
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Bug 987609 - [Camera][Madai][UX] Gallery/preview Image number should be visible when swiping
Bumping manifests a=b2g-bump