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

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https://hg.mozilla.org/integration/gaia-2_1/rev/86b1623adbce
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #25982 from snowmantw/bug1089529-2.1

Bug 1089529 - Lockscreen error after screen off and on when device shows...

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https://hg.mozilla.org/integration/gaia-2_1/rev/c6074b138d6e
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1089529 - Lockscreen error after screen off and on when device shows NFC shrinking UI
Bumping manifests a=b2g-bump