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

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https://hg.mozilla.org/integration/gaia-central/rev/e4e5c2c5cdc9
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #16212 from gnaneswar/Issue_960705

Bug 960705 - [clock][l10n] Close button should say Stop instead; r=mcav

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https://hg.mozilla.org/integration/gaia-central/rev/0b32d272019c
Author: Gnaneswar Devuni <gnaneswar.devuni@accenture.com>
Desc: Bug 960705 - [clock][l10n] Close button should say Stop instead; r=reviews
Bumping manifests a=b2g-bump