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

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https://hg.mozilla.org/integration/gaia-central/rev/64a2c6ab9a27
Author: Arnau <arnau@arnaumarch.com>
Desc: Merge pull request #21014 from pacorampas/filter-call-log-1026387

Bug 1026387 - [Dialer][Call log] 'missed' highlighted when tapping edit and back, then tapping 'all' r=me

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https://hg.mozilla.org/integration/gaia-central/rev/5e29f35b794b
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 1026387 - [Dialer][Call log] 'missed' highlighted when tapping edit and back, then tapping 'all'
Bumping manifests a=b2g-bump