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

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https://hg.mozilla.org/integration/gaia-central/rev/3adc84240f43
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #30168 from alivedise/bugzilla/1166595/set-nfc-focus-fail-to-fallback

Bug 1166595 - Blur the activity opener before opening activity window

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https://hg.mozilla.org/integration/gaia-central/rev/bd41f7dac163
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1166595 - Blur the activity opener before opening activity window

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https://hg.mozilla.org/integration/gaia-central/rev/b591d6a916c6
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1163169 - merge pull request #30155 from albertopq:1163169-taskmanager-logo to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/d6db3766d302
Author: albertopq <albert.pastor@gmail.com>
Desc: Bug 1163169 - Blocking home events on Logo handler

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "f5c5da84832b4d0976cdc68afed7886b96cd4d9c", 
+        "git_revision": "a1507a1c7e37f09737e7da332d7bd4f742e08fec", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "4a2e3f0b25b82dc1d13f59965c1f07517331db98", 
+    "revision": "3adc84240f4352c3973f8d820dde41b8c408b034", 
     "repo_path": "integration/gaia-central"
 }