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

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https://hg.mozilla.org/integration/gaia-central/rev/5d5888fdf532
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #24086 from crdlc/bug-1067427

Bug 1067427 - [Contacts] [Regression] Contacts photo / image are lost un...

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https://hg.mozilla.org/integration/gaia-central/rev/b8bd76f22487
Author: crdlc <crdlc@tid.es>
Desc: Bug 1067427 - [Contacts] [Regression] Contacts photo / image are lost under certain interactions made by the user
Bumping manifests a=b2g-bump