Update dependency vitest to v0.20.2 (#11)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -81,7 +81,7 @@
     "typescript": "4.7.4",
     "vite": "^3.0.4",
     "vite-plugin-externals": "^0.5.1",
-    "vitest": "^0.19.1",
+    "vitest": "0.20.2",
     "vue": "^3.2.37",
     "vue-loader": "^17.0.0",
     "webpack": "^5.74.0"