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

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https://hg.mozilla.org/integration/gaia-central/rev/e15369ea9cfd
Author: Zibi Braniecki <zbigniew.braniecki@gmail.com>
Desc: Merge pull request #31525 from zbraniecki/1192744-use-hour12-in-message-report

Bug 1192744 - Use mozHour12 in SMS message report. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/deaca9ef3cd7
Author: Zibi Braniecki <gandalf@mozilla.com>
Desc: Bug 1192744 - Use mozHour12 in SMS message report

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "e9c57d7d952c9466548ab75f67e54f9ccf028360", 
+        "git_revision": "cac05952511845a343796594297d1e88f1949120", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "9428a5a8f19532cb74ab17444f2afadc45576f74", 
+    "revision": "e15369ea9cfdeb8c7ee0cdb8bef031cc728bbe39", 
     "repo_path": "integration/gaia-central"
 }