Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/fbcff4bc9125
Author: KWierso <kwierso@gmail.com>
Desc: Merge pull request #26059 from albertopq/1092391-alarm-popup-2.1

Bug 1092391 - Fix attentionWindow race condition with lockscreen keyboard r=alive a=bajaj

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https://hg.mozilla.org/integration/gaia-2_1/rev/3e8d972b9583
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1092391 - Fix attentionWindow race condition with lockscreen keyboard

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https://hg.mozilla.org/integration/gaia-2_1/rev/1ff402072539
Author: KWierso <kwierso@gmail.com>
Desc: Merge pull request #26349 from mpizza/Bug_1094129_v2.1

Bug 1094129 - [Woodduck v2.0][Flame v2.1][Settings]There is no SIM settings icons when you insert SIM2 only in Settings -> Cellular & Data. a=bajaj

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https://hg.mozilla.org/integration/gaia-2_1/rev/03e472ee5500
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 1094129 - [Woodduck v2.0][Flame v2.1][Settings]There is no SIM settings icons when you insert SIM2 only in Settings -> Cellular & Data.
Bumping manifests a=b2g-bump