Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/916836338520
Author: BavarianTomcat <tomcat@mozilla.com>
Desc: Revert "Bug 1211792 - The new private browser opened from task manager does not show the advice page or start page" for gij28 test failures

This reverts commit 0a81c6a32c1c4c197cda27f6b4477d8751e29533.

========

https://hg.mozilla.org/integration/gaia-central/rev/08c86e8392fa
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Merge pull request #32329 from stasm/1212817-make-raptor-app

Bug 1212817 - Allow to specify APP= for 'make raptor'. r=eli

========

https://hg.mozilla.org/integration/gaia-central/rev/94e6581f65c4
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Bug 1212817 - Allow to specify APP= for 'make raptor'

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "ea4dd0d9149f28c6daf3a627be47000b23336ca0", 
+        "git_revision": "a69217f72058a5ef709dc63454d62117c7c48b96", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "377818795a63d6ce5e4f981613bc1754e2d2bc64", 
+    "revision": "91683633852044e5ec311b47d3ac088ac5ed4642", 
     "repo_path": "integration/gaia-central"
 }