Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/169c12f20181
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 1088279 - Intermittent test_a11y_phone_keypad.py disable on tbpl/macos r=me a=test-only
Bumping manifests a=b2g-bump
Bug 1083107 - Intermittent too much recursion error in NetworkStats API. r=vchang, a=bajaj

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extra : rebase_source : 0306e049a100ccdbb15fccb61106b543470dccbd
Bug 1082545 - Make fastSeek always fast except the seek behind the last keyframe. r=sotaro, a=bajaj

--HG--
extra : rebase_source : 41fdab43ff9415d9ad4ae5771ee27489943d2127
Bug 1066013 - Initialize appCache path. r+a=fabrice

--HG--
extra : rebase_source : ee623e858fab8871375c2c9ac56b80946187bf84