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

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https://hg.mozilla.org/integration/gaia-central/rev/03b96e704058
Author: Arnau <arnau@arnaumarch.com>
Desc: Merge pull request #19935 from pacorampas/Inbound-call-icon-1018474

Bug 1018474 - [B2G][Dialer] Inbound call icon missing in call log r=rik

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https://hg.mozilla.org/integration/gaia-central/rev/ff6a86f70dd5
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 1018474 - [B2G][Dialer] Inbound call icon missing in call log
Bumping manifests a=b2g-bump