Update pnpm to v7.1.9 (#110)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -68,7 +68,7 @@
     "upper-case-first": "~2.0.2",
     "vue-eslint-parser": "~9.0.2"
   },
-  "packageManager": "[email protected].7",
+  "packageManager": "[email protected].9",
   "engines": {
     "node": ">= 14.6.0",
     "npm": ">= 6.0.0",