Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/7f5e932c2324
Author: Arthur Chen <crh0716@gmail.com>
Desc: Revert "Merge pull request #25536 from crh0716/1089572"

This reverts commit 1af362224eb9ba09f13ad9c363e1c6fff6044431, reversing
changes made to c4b403023bb657d4d5e1cadfb5cc55e757c337cf.
Bumping manifests a=b2g-bump