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

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https://hg.mozilla.org/integration/gaia-central/rev/6f90ed0a8e9a
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #32435 from aethanyc/bug1205895

Bug 1205895 - Stop event propagation after handling commands. r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/79545530d07f
Author: Ting-Yu Lin <tlin@mozilla.com>
Desc: Bug 1205895 - Stop event propagation after handling commands. r=etienne

We should stop 'click' event propagation after handling the
commands (cut, copy, etc.) in app text selection dialog.

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https://hg.mozilla.org/integration/gaia-central/rev/b04fc04e8ceb
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #31929 from zbraniecki/1206318-move-calendar-to-intl-api

Bug 1206318 - Migrate mozL10n.DateTimeFormat to Intl API in Calendar. r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/ddf17b58bf91
Author: Zibi Braniecki <gandalf@mozilla.com>
Desc: Bug 1206318 - Migrate mozL10n.DateTimeFormat to Intl API in Calendar

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "fe4c2d23091269a4e3f80b53ae1f5cd87045d79c", 
+        "git_revision": "20f795aaa4c98a87b8fb595a3dbaa91c340d0fc3", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "5d440e97c5153e09aeb3cc5d22f7f22774b7bf28", 
+    "revision": "6f90ed0a8e9ace5feee2d1fa351bed303112834a", 
     "repo_path": "integration/gaia-central"
 }