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

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https://hg.mozilla.org/integration/gaia-central/rev/6bcd788fd4ac
Author: Martijn <martijn.martijn@gmail.com>
Desc: Merge pull request #30675 from mwargers/1162112_enable

Bug 1162112 - re-enable test_rocketbar_add_collection_save_bookmark.p…

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https://hg.mozilla.org/integration/gaia-central/rev/5fb8043d5aba
Author: Martijn Wargers <mwargers@mozilla.com>
Desc: Bug 1162112 - re-enable test_rocketbar_add_collection_save_bookmark.py in the manifest, because it works again

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "7683f59196bdd0e8d4e6524e14c6aee329698f14", 
+        "git_revision": "77dd6b90d52f94853f11101d574107b873fa01b3", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "52adc2c2cd0acb028a52c92dddfc9b134feaac3f", 
+    "revision": "6bcd788fd4aca4ece9a8cb548c21ef1e30c08669", 
     "repo_path": "integration/gaia-central"
 }