Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/9607d52833bf
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #26782 from viorelaioia/revert_ftu_with_tour_commit

Revert "Bug 1102931 - Intermittent test_ftu_with_tour.py TestFtu.test_ft...

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https://hg.mozilla.org/integration/gaia-central/rev/8af5c7c17702
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Revert "Bug 1102931 - Intermittent test_ftu_with_tour.py TestFtu.test_ftu_with_tour"

This reverts commit 4e2c37ea03b55fff3665a5b006fdd5d3dd5db20a.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "8f2286ab3f8eab31fd577a987ddd63cce027c2ab", 
+    "revision": "9607d52833bfa08f7aededcb384cf2be5b707b6b", 
     "repo_path": "integration/gaia-central"
 }