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

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https://hg.mozilla.org/integration/gaia-central/rev/936d69a5e13f
Author: Min-Zhong "John" Lu <jlu@mozilla.com>
Desc: Merge pull request #26274 from mnjul/bug_1094031_use_normalier_in_layout_manager

Bug 1094031 - Let LayoutManager._updateCurrentPage() use LayoutNormalizer._normalizeKey(). r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/4ff774399958
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1094031 - Let LayoutManager._updateCurrentPage() use LayoutNormalizer._normalizeKey()

- Extract a new class LayoutKeyNormalizer from LayoutNormalizer, which can be used by LayoutNormalizer and LayoutManager.
Bumping manifests a=b2g-bump