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

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https://hg.mozilla.org/integration/gaia-central/rev/f40e9098d365
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #26014 from weideng/bug1096701

Bug 1096701 - [Keyboard][Handwriting] Add HandwritingPadTargetHandler. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/d268f05b7b62
Author: wdeng <wdeng@mozilla.com>
Desc: Bug 1096701 - [Keyboard][Handwriting] Add HandwritingPadTargetHandler
Bumping manifests a=b2g-bump