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

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https://hg.mozilla.org/integration/gaia-central/rev/1ab9ef0530a5
Author: Ian Liu <iliu@mozilla.com>
Desc: Merge pull request #14352 from ian-liu/bluetooth/Bug946134_No_need_to_use_filenames

Bug 946134 - [Bluetooth File Transfer] No need to use filename for checking the numbers of sending files in schedule, r=@alivedise

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https://hg.mozilla.org/integration/gaia-central/rev/dfb7e25b9066
Author: ian-liu <iliu@mozilla.com>
Desc: Bug 946134 - [Bluetooth File Transfer] No need to use filename for checking the numbers of sending files in schedule