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

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https://hg.mozilla.org/integration/gaia-central/rev/46fb0be83526
Author: Albert <acperez@tid.es>
Desc: Merge pull request #19533 from acperez/bug-1014421

Bug 1014421 - Add DUN APN for Movistar. r=jaoo

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https://hg.mozilla.org/integration/gaia-central/rev/fb7365ba040b
Author: Albert <acperez@tid.es>
Desc: Bug 1014421 - Add DUN APN for Movistar
Bumping manifests a=b2g-bump