deps(canvas): use rc version to support node 22

Author: AdrianAndersen

package.json

@@ -20,7 +20,7 @@
     "@boklisten/bl-post-office": "^0.5.56",
     "@napi-rs/image": "^1.8.0",
     "@sendgrid/mail": "^8.1.3",
-    "canvas": "^2.11.2",
+    "canvas": "^3.0.0-rc2",
     "cookie-parser": "^1.4.5",
     "cors": "^2.8.5",
     "dotenv": "^16.0.1",