Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/4d313feb1594
Author: chirarobert <robert.chira@softvision.ro>
Desc: Merge pull request #25328 from viorelaioia/bug_1079254

Bug 1079254 - [v2.2] Investigate test_number_keyboard intermittent failu...

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https://hg.mozilla.org/integration/gaia-central/rev/a1e981c05270
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1079254 - [v2.2] Investigate test_number_keyboard intermittent failure

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https://hg.mozilla.org/integration/gaia-central/rev/e356a0458a6a
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #25298 from KevinGrandon/bug_1065179_app_auth_dialog_test_case

Bug 1065179 - [System] Add integration test for app authentication

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https://hg.mozilla.org/integration/gaia-central/rev/4c99b4888e86
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1065179 - [System] Add integration test for app authentication r=albertopq
Bumping manifests a=b2g-bump