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

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https://hg.mozilla.org/integration/gaia-central/rev/a62b07d0ad0b
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #22350 from comoyo/bug1044984

Bug 1044984 - Fix intermittent worker tests because timing issue. r=RudyL

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https://hg.mozilla.org/integration/gaia-central/rev/c40abd511b75
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 1044984 - Fix intermittent worker tests because timing issue
Bumping manifests a=b2g-bump