Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/183b45c6d967
Author: Sam Foster <sfoster@mozilla.com>
Desc: Merge pull request #33444 from sfoster/ftu-date-format-bug-1228144

Bug 1228144 - Use toLocaleString when updating date. r=zbraniecki

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https://hg.mozilla.org/integration/gaia-central/rev/402755199d40
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1228144 - Use toLocaleString when updating date. r=zbraniecki

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https://hg.mozilla.org/integration/gaia-central/rev/1eecd7f22dd6
Author: Sam Foster <sfoster@mozilla.com>
Desc: Merge pull request #33347 from sfoster/ftu-curtainup-gij-bug-1227705

Bug 1227705 - Use waitForCurtainUp before interacting in tests. r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/2a9c76e8f81e
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1227705 - Use waitForCurtainUp/waitForFtuReady before interacting in tests. r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/aa13cb19a78e
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Merge pull request #33326 from michielbdejong/1181687-MockLazyLoader-Promises

Bug 1181687 - Use real Promises in MockLazyLoader, r=ferjm

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https://hg.mozilla.org/integration/gaia-central/rev/4e47990e1a61
Author: Michiel de Jong <mbdejong@mozilla.com>
Desc: Bug 1181687 - Use real Promises in MockLazyLoader, r=ferjm

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "64aba1a65219ca906ccba27a6b762612dcec1fc6", 
+        "git_revision": "538c96ab7f17adbbd15b82f750e7247c5685e831", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "406f8198e2b16fc1b28107725f35fd8d135b3b81", 
+    "revision": "183b45c6d96733ce09aee5eb7d7882b0d81f020d", 
     "repo_path": "integration/gaia-central"
 }