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

========

https://hg.mozilla.org/integration/gaia-central/rev/82ea41508fce
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #20477 from gasolin/issue-1009271-3

Bug 1009271 - opened window.open dialog link as view activity, r=alive

========

https://hg.mozilla.org/integration/gaia-central/rev/1b390ac344be
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1009271 - opened window.open dialog link as view activity

- fix activityclose typo in activity window
- No transition when the callee is caller
- add sheets window dialog test case
- always use AWM.activeApp.getTopMostWindow() as caller
Bumping manifests a=b2g-bump