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

========

https://hg.mozilla.org/integration/gaia-central/rev/6f8d4cb4b0a4
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #15170 from svic/Bug_950269

Bug 950269: Rename "tech" to "techList" in techDiscovered. Gaia side.

========

https://hg.mozilla.org/integration/gaia-central/rev/65b3c21bfb0a
Author: Garner Lee <garner.lee@telekom.com>
Desc: Bug 950269: Rename "tech" to "techList" in techDiscovered. Gaia side.