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

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https://hg.mozilla.org/integration/gaia-central/rev/0c3d5cc03e4d
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #28116 from chirarobert/bug_1131558

Bug 1131558 - Xfail sim import tests because of Bug 1131022

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https://hg.mozilla.org/integration/gaia-central/rev/68f641180d6b
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1131558 - Xfail sim import tests because of Bug 1131022

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https://hg.mozilla.org/integration/gaia-central/rev/d541ec284326
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1129520 - merge pull request #28107 from gmarty:Bug-1129520-RTL-selected-items-on-drop-down-menus to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/4f83c0c8f2ef
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1129520 - [RTL][Selection] When selecting something in a check mark context menu, the text will move

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "ab6a486f14f51058db681c0d63945bae31c1467e", 
+        "git_revision": "5538ae511cb0894c44ff78d6193566f1aeeadcfa", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "f8606bfcbca10571ed4fb6d551dcddd253cc3d54", 
+    "revision": "0c3d5cc03e4d85c5f08932f2676df51f34938c03", 
     "repo_path": "integration/gaia-central"
 }