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

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https://hg.mozilla.org/integration/gaia-central/rev/5d4d5ea36833
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #25355 from jmcanterafonseca/fix_image_resolution

Bug 1054994 - Contact photos are scaled down below the screen resolution

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https://hg.mozilla.org/integration/gaia-central/rev/e363ea2807fd
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1054994 - Contact photos are scaled down below the screen resolution
Bumping manifests a=b2g-bump