Exclude 3.9 and fix checks...

Author: evertharmeling

src/Chartjs/assets/package.json

@@ -15,7 +15,7 @@
     },
     "peerDependencies": {
         "@hotwired/stimulus": "^3.0.0",
-        "chart.js": "^3.4.1 || ^4.0"
+        "chart.js": "^3.4.1 <3.9 || ^4.0"
     },
     "devDependencies": {
         "@hotwired/stimulus": "^3.0.0",