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

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https://hg.mozilla.org/integration/gaia-central/rev/b8bf8b4e076d
Author: Guillaume C. Marty <gmarty@users.noreply.github.com>
Desc: Merge pull request #32354 from gmarty/Bug-1202770-Clearing-private-data-should-not-delete-pinned-pages-or-pinned-site-icons

Bug 1202770 - Clearing browsing history should not delete pinned pages

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https://hg.mozilla.org/integration/gaia-central/rev/619c6432296b
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1202770 - Clearing browsing history should not delete pinned pages

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "8ea9029190af2ffeb04dcd97b323738125e31a0e", 
+        "git_revision": "aec2c319e898b6cfce2d625217ccf669b5c8f88f", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "25790d1036e01366a957eed0ade6c259f5442cbf", 
+    "revision": "b8bf8b4e076d0582d7750b7058b68d49528dfb15", 
     "repo_path": "integration/gaia-central"
 }