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

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https://hg.mozilla.org/integration/gaia-1_3/rev/c7f33a0e4263
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #17132 from AndreiH/bug_982642

Bug 982642 - [v1.3] test_persona_cookie.TestPersonaCookie intermittent f...

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https://hg.mozilla.org/integration/gaia-1_3/rev/c42022cab951
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 982642 - [v1.3] test_persona_cookie.TestPersonaCookie intermittent fail

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https://hg.mozilla.org/integration/gaia-1_3/rev/fc0ae0fca843
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #17127 from AndreiH/bug_982599

Bug 982599 - [v1.3] Test test_ftu_skip_tour.TestFtu fails on CI

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https://hg.mozilla.org/integration/gaia-1_3/rev/2ce52be74a3b
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 982599 - [v1.3] Test test_ftu_skip_tour.TestFtu fails on CI
Bumping manifests a=b2g-bump