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

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https://hg.mozilla.org/integration/gaia-central/rev/9b8b1ae55ed0
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #31453 from danhuang1202/1195709_remove_screenlock_panel_string

Bug 1195709 - [Settings] remove screenlock panel strings in HTML, r=gasolin

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https://hg.mozilla.org/integration/gaia-central/rev/64f9fa8979c1
Author: danhuang1202 <danhuang1202@gmail.com>
Desc: Bug 1195709 - [Settings] remove screenlock panel strings in HTML

*remove tag string with i10n attr in apps/settings/elements/screen_lock.html
*remove tag string with i10n attr in apps/settings/elements/screen_lock_passcode.html

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "1b4259db8a178e592ce50afae9f78c9c5877f666", 
+        "git_revision": "f6cde6b8a2af2d2cfa3ce9b7f4cda2daab9174a8", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "74e9fb457c55262c493badd7aec13e13003abc3c", 
+    "revision": "9b8b1ae55ed0ab8411fb71e451aa7cf58065985b", 
     "repo_path": "integration/gaia-central"
 }