Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/d5fca04c54d8
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #25502 from yzen/bug-1069216

Bug 1069216 - improved screen reader accessibility of the event view.

========

https://hg.mozilla.org/integration/gaia-central/rev/7548f649f4d2
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1069216 - improved screen reader accessibility of the event view. r=mmedeiros

========

https://hg.mozilla.org/integration/gaia-central/rev/9a3e610c5e57
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #25462 from mcav/monday

Bug 1084843 - For locales where first day of week is Monday... r=millermedeiros

========

https://hg.mozilla.org/integration/gaia-central/rev/d1cd7cf2d6ba
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 1084843 - For locales where first day of week is Monday, Repeat feature for alarms is broken.
Bumping manifests a=b2g-bump