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

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https://hg.mozilla.org/integration/gaia-central/rev/2b450d14a16f
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #26775 from azasypkin/bug-1109745-early-lazy-load

Bug 1109745 - [Messages] Load thread_ui and activity_handler earlier when starting as an activity. r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/d9c46841fa54
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1109745 - [Messages] Load thread_ui and activity_handler earlier when starting as an activity. r=julien
Bumping manifests a=b2g-bump