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

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https://hg.mozilla.org/integration/gaia-central/rev/41eecd2d4afc
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #14644 from crdlc/bug-948979

Bug 948979 - [Download Manager] A wrong message is displayed if you try ...

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https://hg.mozilla.org/integration/gaia-central/rev/1484b7fc5760
Author: crdlc <crdlc@tid.es>
Desc: Bug 948979 - [Download Manager] A wrong message is displayed if you try to open a file while the device is connected as USB storage