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

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https://hg.mozilla.org/integration/gaia-central/rev/743e96bab0e3
Author: Min-Zhong "John" Lu <jlu@mozilla.com>
Desc: Merge pull request #23342 from mnjul/bug_1059051_keyboard_symbols_ttf

Bug 1059051 - Convert Keyboard-Symbols.woff to Keyboard-Symbols.ttf. r=yuren

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https://hg.mozilla.org/integration/gaia-central/rev/8c41d39346a0
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1059051 - Convert Keyboard-Symbols.woff to Keyboard-Symbols.ttf
Bumping manifests a=b2g-bump