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

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https://hg.mozilla.org/integration/gaia-central/rev/f63fa4e31cea
Author: EragonJ <eragonj@eragonj.me>
Desc: Merge pull request #14626 from EragonJ/bug-945140-another-try

Bug 945140 - [DSDS] SIM 2 can still MT/MO SMS and MT voice call in airpl...

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https://hg.mozilla.org/integration/gaia-central/rev/6aec6f6cd451
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 945140 - [DSDS] SIM 2 can still MT/MO SMS and MT voice call in airplane mode.

- make airplane mode work in dsds & single sim