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

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https://hg.mozilla.org/integration/gaia-central/rev/36e761f70d7c
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #15047 from zacc/bug_956743

Bug 956743 - xfail test_settings_change_keyboard for devices due to Mari...

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https://hg.mozilla.org/integration/gaia-central/rev/de1320d21657
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 956743 - xfail test_settings_change_keyboard for devices due to Marionette bug 956761