Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/39da50764bde
Author: Fabien Cazenave <fabi1cazenave@users.noreply.github.com>
Desc: Merge pull request #31971 from fabi1cazenave/bb-value-selector

Bug 1207103 - [bb] value selector, r=pivanov

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https://hg.mozilla.org/integration/gaia-central/rev/9800a205a2e8
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: workaround for bug 1207131

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https://hg.mozilla.org/integration/gaia-central/rev/a1bd057c1529
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: [bb] value_selector

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https://hg.mozilla.org/integration/gaia-central/rev/987fb2b1b2e1
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: [bb] date_selector

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https://hg.mozilla.org/integration/gaia-central/rev/8678e7a55385
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: [bb] time_selector

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "acb0960253777968bcb88f6f7fd295da80be7377", 
+        "git_revision": "405c72c8d613e8a08b7f598e347a4c6865e85990", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "c534a45b3e2488e240cf65b8cfca5480a142c0ca", 
+    "revision": "39da50764bde1650e48ff00de5a4d1c3d1fe0d4f", 
     "repo_path": "integration/gaia-central"
 }