fix: downgrade tsup, close #45

Author: antfu

package.json

@@ -74,7 +74,7 @@
     "defu": "^5.0.0",
     "htmlparser2": "^7.1.2",
     "magic-string": "^0.25.7",
-    "unplugin": "^0.2.9"
+    "unplugin": "^0.2.10"
   },
   "devDependencies": {
     "@antfu/eslint-config": "^0.9.0",
@@ -95,7 +95,7 @@
     "pug": "^3.0.2",
     "rimraf": "^3.0.2",
     "ts-jest": "^27.0.5",
-    "tsup": "^5.0.0",
+    "tsup": "^4.14",
     "typescript": "^4.4.3",
     "vite": "^2.5.7"
   },