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

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https://hg.mozilla.org/integration/gaia-central/rev/ee2b3048ba1e
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #17950 from mcav/stopwatch-l10n

Bug 988057 - [Stopwatch][l10n] Localization of stopwatch is broken. r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/1ce72ce5ed12
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 988057 - [Stopwatch][l10n] Localization of stopwatch is broken.
Bumping manifests a=b2g-bump