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

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https://hg.mozilla.org/integration/gaia-central/rev/f98cc089db06
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #20613 from jmcanterafonseca/contacts_Data

Bug 989929 - [Contacts][Refactor] Create Contacts indexed DB library to ...

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https://hg.mozilla.org/integration/gaia-central/rev/5e71e90bb54f
Author: José Manuel Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 989929 - [Contacts][Refactor] Create Contacts indexed DB library to support synchronization from the Global Contacts Datastore

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https://hg.mozilla.org/integration/gaia-central/rev/7fb5ac42a379
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #21317 from snowmantw/issue1033135

Bug 1033135 - [System] Hide SIM pin dialog if the screen unlock into Cam...

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https://hg.mozilla.org/integration/gaia-central/rev/487e7faa8395
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1033135 - [System] Hide SIM pin dialog if the screen unlock into Camera app
Bumping manifests a=b2g-bump