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

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https://hg.mozilla.org/integration/gaia-central/rev/6eeae9380894
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1159644 - merge pull request #29837 from sfoster:editmode-button-padding-bug-1159644 to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/1aa590b50afb
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1159644 - Reduce padding on buttons to account for fixed overflow/truncation behavior

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https://hg.mozilla.org/integration/gaia-central/rev/5bcbb5389be6
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1158740 - merge pull request #29805 from sfoster:shared-button-padding-bug-1158740 to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/07c813572840
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1158740 - reduce padding in dialog buttons

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "2c1df1da6184d6f3ff875f24aeb3273f7d93d222", 
+        "git_revision": "2a69f30edc24be73bb276e3b03dcf2ebf6816bbb", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "e4c21da65950c60a01d4f661be144737cb20c482", 
+    "revision": "6eeae9380894f830a39837993e6349c44d6a8058", 
     "repo_path": "integration/gaia-central"
 }