Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1d86195720e9
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #13628 from gtorodelvalle/contacts-bug-936283-search-bar-plus-Gmail-or-Outlook

Bug 936283 - [B2G][Contacts] Search bar stops functioning when searching contacts in Gmail or Outlook more than once

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https://hg.mozilla.org/integration/gaia-central/rev/a3ec9a7fa26c
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Bug 936283 - [B2G][Contacts] Search bar stops functioning when searching contacts in Gmail or Outlook more than once