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

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https://hg.mozilla.org/integration/gaia-central/rev/75778dc289e2
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #24277 from evanxd/bug-1045330

Bug 1045330 - Go to virtual environment with correct path r=lightsofapollo

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https://hg.mozilla.org/integration/gaia-central/rev/56c0c07b33c9
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1045330 - Go to virtual environment with correct path
Bumping manifests a=b2g-bump