Bumping gaia.json for 8 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/973b9d250a3c
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Merge pull request #28046 from RickyChien/bug-1130632

Bug 1130632 - Add FirefoxOS version information to gaia build r=@KevinGrandon

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https://hg.mozilla.org/integration/gaia-central/rev/234550197308
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Bug 1130632 - Add FirefoxOS version information to gaia build

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https://hg.mozilla.org/integration/gaia-central/rev/80a8d4235fe5
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #27837 from sean2449/Bug_1122418

Bug 1122418 - [Stingray] UI-Transition - Intro launch, r=rexboy, r=johnhu

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https://hg.mozilla.org/integration/gaia-central/rev/a68b3fae784e
Author: Sung Chiu <suchiu@mozilla.com>
Desc: Bug 1122418 - [Stingray] UI-Transition - Intro launch

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https://hg.mozilla.org/integration/gaia-central/rev/129690b20cd3
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #28042 from sean2449/Bug_1122426

Bug 1122426 - [Stingray] UI-Transition - Animation for rename/delete button in edit mode, r=rexboy, r=johnhu

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https://hg.mozilla.org/integration/gaia-central/rev/8a7744c07b7e
Author: Sung Chiu <suchiu@mozilla.com>
Desc: Bug 1122426 - [Stingray] UI-Transition - Edit mode enter/exit

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https://hg.mozilla.org/integration/gaia-central/rev/f9c0d00c64ab
Author: Guillaume C. Marty <gmarty@users.noreply.github.com>
Desc: Merge pull request #28048 from gmarty/Bug-1129835-The-time-will-skip-to-2-minutes-later-after-you-unlock-screen

Bug 1129835 - [Flame][Notifications]The time will skip to 2 minutes late...

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https://hg.mozilla.org/integration/gaia-central/rev/9e4eab5226bc
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1129835 - [Flame][Notifications]The time will skip to 2 minutes later after you unlock sreen

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "184c4fa44f829bf769a04f5c44e0a1244ee32ece", 
+        "git_revision": "a8fa0386eeb4b744d8cd154231c4bb8f05e4d95c", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "53071aa7cad95cefef7a0dd6aa34d1fc8b4acb6d", 
+    "revision": "973b9d250a3c4b7b246956c8c2d3ae9399577015", 
     "repo_path": "integration/gaia-central"
 }