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

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https://hg.mozilla.org/integration/gaia-1_3/rev/8ebe02ef504c
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #20469 from mnjul/v1.3

Revert "Merge pull request #19374 from mnjul/bug_1011645_lockscreen_pass...

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https://hg.mozilla.org/integration/gaia-1_3/rev/a79ec3f3536d
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Revert "Merge pull request #19374 from mnjul/bug_1011645_lockscreen_passcode_camera_button_stall_v1.3"

This reverts commit e74f2080cc58e78957809305a27afdc1b062f876, reversing
changes made to e049de79ff46fcab51f29a88d5869c5efb48fc3c.
Bumping manifests a=b2g-bump