Update dependency mocha to v10.6.0

This MR contains the following updates:

Package	Type	Update	Change
mocha (source)	devDependencies	minor	10.5.2 -> 10.6.0

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Release Notes

mochajs/mocha (mocha)

v10.6.0

Compare Source

🎉 Enhancements

• #​5150 feat: allow ^ versions for character encoding packages (@​JoshuaKGoldberg)
• #​5151 feat: allow ^ versions for file matching packages (@​JoshuaKGoldberg)
• #​5152 feat: allow ^ versions for yargs packages (@​JoshuaKGoldberg)
• #​5153 feat: allow ^ versions for data serialization packages (@​JoshuaKGoldberg)
• #​5154 feat: allow ^ versions for miscellaneous packages (@​JoshuaKGoldberg)

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