Bumping gaia.json for 1 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/a013dc455f2e
Author: Ian Liu <iliu@mozilla.com>
Desc: Merge pull request #14887 from ian-liu/bluetooth/bug951566_fix_unknown_filename_while_sharing_blobs_without_name

Bug 951566 - [Bluetooth][Bluedroid] Unknown.jpeg shown in notification after file transfer via Bluetooth, r=@dominickuo
(cherry picked from commit 503af44c30a96eb0db5eab0ee6bfbeb397dea9bf)