Update dependency @vue/cli-plugin-unit-mocha to v5 (develop)

This MR contains the following updates:

Package	Type	Update	Change
@vue/cli-plugin-unit-mocha	devDependencies	major	4.5.15 -> 5.0.1

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Release Notes

vuejs/vue-cli

v5.0.1

Compare Source

Same as 5.0.0.

v5.0.0

Compare Source

🐛 Bug Fix

• @vue/cli-service
  • #​6972 Remove --skip-plugin from arguments (@​MatthijsBurgh)
  • #​6987 fix: update mini-css-extract-plugin to ^2.5.3 (@​darrinmn9)

📝 Documentation

• #​6706 docs: update vue create --help output in "Basics/Creating a Project" (@​Lalaluka)
• #​6642 docs: Update README.md (@​wxsms)
• #​6620 Fix typo in deployment guide (@​Klikini)
• #​6623 fix(docs): the plugin-dev in zh has a regexp lose the end / (@​HelloJiya)
• #​6377 replace master with main to reflect GH default (@​anbnyc)
• #​6359 Fix master to main in heroku deployment (@​MowlCoder)
• #​6266 Add note about loader incompatible with webpack 4 (@​JarnoRFB)
• #​6239 Update deployment.md (@​anzuj)
• #​6237 fix code demo (@​yyzclyang)

Committers: 13

• Alec Barrett (@​anbnyc)
• Alexander Sokolov (@​Alex-Sokolov)
• Andy Castille (@​Klikini)
• Anzelika (@​anzuj)
• Ben Hutton (@​Relequestual)
• Calvin Schröder (@​Lalaluka)
• Darrin Nagengast (@​darrinmn9)
• Matthijs van der Burgh (@​MatthijsBurgh)
• Rüdiger Busche (@​JarnoRFB)
• @​HelloJiya
• @​MowlCoder
• wxsm (@​wxsms)
• 鱼依藻常乐 (@​yyzclyang)

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