Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/debc9897303c
Author: Martijn <martijn.martijn@gmail.com>
Desc: Merge pull request #29573 from mwargers/1150065

Bug 1150065 - Enable test_homescreen_column_layout.py

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https://hg.mozilla.org/integration/gaia-central/rev/e4b41b1df9fd
Author: Martijn Wargers <mwargers@mozilla.com>
Desc: Bug 1150065 - Enable test_homescreen_column_layout.py

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https://hg.mozilla.org/integration/gaia-central/rev/22da6cf0ddb7
Author: Martijn <martijn.martijn@gmail.com>
Desc: Merge pull request #29580 from mwargers/1155756

Bug 1155756 - Remove online = true in homescreen manifest.ini and add it only for the Gaia UI tests that need it

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https://hg.mozilla.org/integration/gaia-central/rev/3d30a7ee6312
Author: Martijn Wargers <mwargers@mozilla.com>
Desc: Bug 1155756 - Remove online = true in homescreen manifest.ini and add it only for the Gaia UI tests that need it

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "805853cebe4a205eab1047cd5e89e83de2837259", 
+        "git_revision": "61ae8cda446e07f3e4d3713954ea8dc6b282626c", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "a95caf770c9498f4a72cf6d81d42a00efd5d9ea4", 
+    "revision": "debc9897303c626733869cd4267c48cdf4e9455c", 
     "repo_path": "integration/gaia-central"
 }