chore(deps): update devdependency nuxt to ^2.15.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nuxt	^2.15.3 -> ^2.15.4

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Release Notes

nuxt/nuxt.js

v2.15.4

Compare Source

🐛 Bug Fixes

• vue-app
  • #​8978 Reload page once after loading chunk error (resolves #​3389)
  • #​9008 Fallback to global nuxt instance of $root is not available (resolves #​8995)
  • #​9010 Use app.context.route to match components in server (resolves #​9009)
  • #​9024 Serialize redirect functions in routes (resolves #​8979)
  • #​9026 Re-call $fetch if data is missing in payload (resolves #​9016)
  • #​9050 Use app.context.route for resolving components (resolves #​9049)
  • #​9075 Move internal app runtime config to _app namespace (resolves #​9074)
• config
  • #​9014 Set compileType to icss for css-loader v4
• server
  • #​9034 Avoid caching .js assets in development to fix HMR in safari (resolves #​3828)
• cli
  • #​8996 Remove warning if postcss 8 is installed (resolves #​8087 (comment))

👕 Types

• #​9078 Inline @types/terser-webpack-plugin
• #​9086 Use options from sass-loader rather than sass (resolves #​9085)
• #​9053 Css-loader v4 type definitions
• #​9018 Don't require all csp policies as keys (resolves #​9017)
• #​9059 Add stub entrypoint to allow node resolution of @nuxt/types (resolves #​9030)

💖 Thanks to

• ChangJoo Park (박창주) (@​ChangJoo-Park)
• Evan Ma (@​EvanMaFYH)
• Thomas Beduneau (@​enwin)
• @​rinu
• @​zzzmisa

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