chore(deps): update dependency unbuild to ^0.8.8

Author: renovate[bot]

package.json

@@ -61,7 +61,7 @@
     "semver": "^7.3.7",
     "sinon": "^14.0.0",
     "typescript": "^4.7.4",
-    "unbuild": "^0.7.6",
+    "unbuild": "^0.8.8",
     "vue": "^3.2.37",
     "vue-router": "^4.1.3",
     "yorkie": "^2.0.0"