chore(deps-dev): bump @nuxt/typescript-build from 0.6.2 to 0.6.4 (#89)

Bumps [@nuxt/typescript-build](https://github.com/nuxt/typescript) from 0.6.2 to 0.6.4.
- [Release notes](https://github.com/nuxt/typescript/releases)
- [Commits](https://github.com/nuxt/typescript/compare/@nuxt/typescript-build@0.6.2...@nuxt/typescript-build@0.6.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -38,7 +38,7 @@
     "nuxt-property-decorator": "^2.5.1"
   },
   "devDependencies": {
-    "@nuxt/typescript-build": "^0.6.2",
+    "@nuxt/typescript-build": "^0.6.4",
     "@nuxtjs/eslint-config-typescript": "^1.0.2",
     "@nuxtjs/eslint-module": "^1.1.0",
     "@types/jest": "^25.2.1",