chore(repo): update pnpm. pnpm now fixes lock conflicts on pnpm install

Author: shellscape

package.json

@@ -36,7 +36,7 @@
     "husky": "^4.2.5",
     "lint-staged": "^10.5.2",
     "nyc": "^15.1.0",
-    "pnpm": "^5.9.3",
+    "pnpm": "5.13.5",
     "prettier": "^2.2.1",
     "prettier-plugin-package": "^1.3.0",
     "ts-node": "^8.10.2",