data/dconf: Add Ctrl-semicolon to Emoji shortcut key
data/dconf: Add Ctrl-semicolon to Emoji shortcut key

period key is needed Shift key in French keyboard and Ctrl-period does
not work.
Add Ctrl-semicolon in org.freedesktop.ibus.panel.emoji.hotkey to fix
the problem.

BUG=https://github.com/ibus/ibus/issues/2360

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