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

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https://hg.mozilla.org/integration/gaia-central/rev/72ad97e381bf
Author: Sergi Mansilla <sergi.mansilla@gmail.com>
Desc: Merge pull request #26739 from arcturus/bug-1092430

Bug 1092430 - Contacts app should follow text selection pattern. r=sergi +autoland

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https://hg.mozilla.org/integration/gaia-central/rev/525d05920747
Author: Francisco Jordano <fjordano@mozilla.com>
Desc: Bug 1092430 - Contacts app should follow text selection pattern. r=sergi +autoland
Bumping manifests a=b2g-bump