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

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https://hg.mozilla.org/integration/gaia-central/rev/dbde2736db74
Author: viorelaioia <viorelaioia@gmail.com>
Desc: Merge pull request #20453 from yzen/bug-1024652

Bug 1024652 - commented out part of the test_a11y_phone_call_log test th...

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https://hg.mozilla.org/integration/gaia-central/rev/4d04fb0b5b07
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1024652 - commented out part of the test_a11y_phone_call_log test that tests contact action menu until long press is supported.
Bumping manifests a=b2g-bump