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

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https://hg.mozilla.org/integration/gaia-central/rev/e6fc71a3fe2e
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #20329 from gasolin/issue-1023238

Bug 1023238 - Remember my choice is not the default option pre-selected ..., r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/ae25fb338fca
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1023238 - Remember my choice is not the default option pre-selected in GUM permission
Bumping manifests a=b2g-bump