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

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https://hg.mozilla.org/integration/gaia-central/rev/58296bb5aae2
Author: Andrew Halberstadt <halbersa@gmail.com>
Desc: Merge pull request #22316 from ahal/runner_service_crash_reporting

Bug 1045142 - Runner service should check_for_crashes on runner_stop, r=...

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https://hg.mozilla.org/integration/gaia-central/rev/7aa56372a5cd
Author: Andrew Halberstadt <halbersa@gmail.com>
Desc: Bug 1045142 - Runner service should check_for_crashes on runner_stop, r=mdas

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "e936fd68f3083644ffef2994efd38572e868f456", 
+    "revision": "58296bb5aae2595cf0b24f396c0d6f1537fb9438", 
     "repo_path": "/integration/gaia-central"
 }