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

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https://hg.mozilla.org/integration/gaia-central/rev/1ec1c097553b
Author: Mihai Cîrlănaru <mihai@cirlanaru.com>
Desc: Merge pull request #18260 from mihai/bug_994710

Bug 994710 - [Settings] Remove icons from Keyboard installed input methods

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https://hg.mozilla.org/integration/gaia-central/rev/657693bfa517
Author: Mihai Cirlanaru <mihai@cirlanaru.com>
Desc: Bug 994710 - [Settings] Remove icons from Keyboard installed input methods. r=arthurcc
Bumping manifests a=b2g-bump