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

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https://hg.mozilla.org/integration/gaia-central/rev/265338f3da8d
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #25725 from makevoid/makevoid/bug_1079776_contact_set_ice_contact_page_background

Bug 1079776 - [Contact] Set ICE contact page is missing background r=francisco

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https://hg.mozilla.org/integration/gaia-central/rev/5e8fcd735ee9
Author: Francesco 'makevoid' Canessa <makevoid@gmail.com>
Desc: [Contacts] CSS - add gray background to #ice-settings panel

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https://hg.mozilla.org/integration/gaia-central/rev/20b9e73fe11c
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #25781 from millermedeiros/1093058-all-day

Bug 1093058 - [Calendar] update the way all day events are calculated r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/126673062ac4
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 1093058 - [Calendar] update the way all day events are calculated
Bumping manifests a=b2g-bump