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

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https://hg.mozilla.org/integration/gaia-central/rev/1c0a538671c1
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Merge pull request #12609 from gitmai/bug-920128-FTE-skip-wifi

Bug 920128 - FTE skip wireless screen (r=fcampo)

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https://hg.mozilla.org/integration/gaia-central/rev/9b85f6d019d9
Author: mai <mri@tid.es>
Desc: Bug 920128 - FTE skip wifi

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https://hg.mozilla.org/integration/gaia-central/rev/f1b040784c04
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #12753 from jmcanterafonseca/simplephone_matcher_2

Bug 924066 - [Contacts] Phone number does not match when importing from ...

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https://hg.mozilla.org/integration/gaia-central/rev/cb59f97df6de
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 924066 - [Contacts] Phone number does not match when importing from SIM the same number with country code