Bumping gaia.json for 5 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/be92f5ad7c5d
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #13320 from bobsilverberg/cp927029

Bug 934227 - [v1.2] Uplift contact import and export tests from master

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https://hg.mozilla.org/integration/gaia-1_2/rev/56bb5020afc4
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Bug 927029 - Write a test for exporting contacts to SD Card, r=zac

Conflicts:
	tests/python/gaia-ui-tests/gaiatest/gaia_test.py

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https://hg.mozilla.org/integration/gaia-1_2/rev/12258448a912
Author: AlinT <trifandreialin@gmail.com>
Desc: Bug 927348 - Write a test to import from VCF file on SD card

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https://hg.mozilla.org/integration/gaia-1_2/rev/83c8b05f1405
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #13330 from bobsilverberg/cp932385

Bug 932385 - Calling moztelephony.active is hanging the device, try UI level solution instead

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https://hg.mozilla.org/integration/gaia-1_2/rev/3d1edca836cd
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 932385 - Calling moztelephony.active is hanging the device, try UI level solution instead