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

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https://hg.mozilla.org/integration/gaia-central/rev/d703d3675227
Author: Min-Zhong "John" Lu <jlu@mozilla.com>
Desc: Merge pull request #24285 from mnjul/bug_1060541_lckscr_noti_scrolling_hvga_for_1038723

Bug 1060541 - Add 1 additional notification to lockscreen with new music player by bug 1038723. r=gweng

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https://hg.mozilla.org/integration/gaia-central/rev/0947529c65eb
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1060541 - Add 1 additional notification to lockscreen with new music player by bug 1038723

- Also, remove the top-mask (implemented in bug 1023500) when the visually top notification in the notifications container viewport is being actioned upon.
Bumping manifests a=b2g-bump