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

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https://hg.mozilla.org/integration/gaia-2_0/rev/bbb4453bedfe
Author: Guillaume C. Marty <edo999@gmail.com>
Desc: Merge pull request #21753 from gmarty/Bug-1035430-v2.0

Bug 1035430 - [B2G][l10n][2.0][Notification Bar] Tamil

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https://hg.mozilla.org/integration/gaia-2_0/rev/03b2b28e4a2f
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1035430 - [B2G][l10n][2.0][Notification Bar] Tamil
Bumping manifests a=b2g-bump