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

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https://hg.mozilla.org/integration/gaia-1_4/rev/d825aa80a206
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #20091 from davidflanagan/bug1020002-v1.4

Bug1020002 v1.4

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https://hg.mozilla.org/integration/gaia-1_4/rev/46ad6a89da3c
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #20029 from davidflanagan/bug1020002

Bug 1020002: don't allow an activity choice that could subvert forward-lock(cherry picked from commit 5415cffccb81a637e4a9c225dce819b89e104933)

fix failing test
Bumping manifests a=b2g-bump