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

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https://hg.mozilla.org/integration/gaia-2_0/rev/1f5a70a344aa
Author: lissyx <lissyx+github@lissyx.dyndns.org>
Desc: Merge pull request #23581 from lissyx/bug1057604

Bug 1057604 - Use the hidden attribute for the save button r=dkuo

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https://hg.mozilla.org/integration/gaia-2_0/rev/40101fef1556
Author: Alexandre Lissy <lissyx+github@lissyx.dyndns.org>
Desc: Bug 1057604 - Use the hidden attribute for the save button r=dkuo

While title-player and title-done did proper use of their "hidden"
attribute to be hidden via CSS rule setting "display: none", the save
button was not part of this list. Thus, setting the "hidden" attribute
to true had no impact on the visibility of the element.
Bumping manifests a=b2g-bump