Update dependency discuss to v0.3.4

Created by: renovate[bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
discuss	0.3.3 -> 0.3.4

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Release Notes

discussjs/Discuss

v0.3.4

Compare Source

fix:

loadScript 后不自行 callback，导致子批量无法显示表情的 bug #​62acf0

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