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

========

https://hg.mozilla.org/integration/gaia-2_0/rev/f05bb1d7fde9
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1039955 - Fix direct circular activity by closing front windows

========

https://hg.mozilla.org/integration/gaia-2_0/rev/6f26c0d8cc43
Author: Doug Sherk <github@sherk.me>
Desc: Bug 1057619 - Rename Node in fb_tel_index to TrieNode, move its test into sharedtest. r=jmcf
Bumping manifests a=b2g-bump