fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-SYSTEMINFORMATION-5914637

package.json

@@ -55,7 +55,7 @@
     "rockpaperscissors-checker": "^1.2.0",
     "set-interval-async": "^3.0.2",
     "stringify-safe": "^1.0.3",
-    "systeminformation": "^5.12.6"
+    "systeminformation": "^5.21.7"
   },
   "devDependencies": {
     "@types/express": "^4.17.14",