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

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https://hg.mozilla.org/integration/gaia-central/rev/a1f323a2ec70
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #15720 from rnowm/950142

Bug 950142 - [B2G][Contacts]Imported Contacts Selection Screen from Gmail ...

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https://hg.mozilla.org/integration/gaia-central/rev/bee72f7c0d90
Author: rnowm <arnau@arnaumarch.com>
Desc: Bug 950142 - [B2G][Contacts]Imported Contacts Selection Screen from Gmail account displays inappropriate truncation and duplication text
Bumping manifests a=b2g-bump