fix vega versions mishap (new release brought dep issue hell)

Author: b-yogesh

chartlets.js/packages/demo/package.json

@@ -1,6 +1,6 @@
 {
   "name": "chartlets-demo",
-  "version": "0.1.5",
+  "version": "0.1.6-dev.0",
   "description": "Demonstrator for the Chartlets framework.",
   "type": "module",
   "files": [
@@ -34,7 +34,11 @@
     "chartlets": "file:../lib",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
-    "react-vega": "^7.6.0",
+    "react-vega": ">=7",
+    "vega": "^5.33.0",
+    "vega-embed": "^6.5.1",
+    "vega-lite": "^5.23.0",
+    "vega-themes": ">=2",
     "zustand": "^5.0.0"
   },
   "devDependencies": {

chartlets.js/packages/lib/package.json

@@ -66,6 +66,9 @@
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-vega": ">=7",
+    "vega": "^5.33.0",
+    "vega-embed": "^6.5.1",
+    "vega-lite": "^5.23.0",
     "vega-themes": ">=2"
   },
   "peerDependenciesMeta": {