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

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https://hg.mozilla.org/integration/gaia-central/rev/808d20f7f239
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #26693 from JohanLorenzo/bug-1104645

Bug 1104645 - Update the conditions regarding the number of digits displ...

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https://hg.mozilla.org/integration/gaia-central/rev/e9098512e0eb
Author: Johan Lorenzo <jlorenzo@mozilla.com>
Desc: Bug 1104645 - Update the conditions regarding the number of digits displayed on the callscreen
Bumping manifests a=b2g-bump