update css-analyzer to 7.0.2 (#35)

🌱 reduces install size with ~50 because css-analyzer now only ships a
single copy of css-tree.
https://github.com/projectwallace/css-analyzer/releases/tag/v7.0.2

Author: bartveneman

package-lock.json

@@ -48,7 +48,7 @@
     "check": "tsc --noEmit"
   },
   "dependencies": {
-    "@projectwallace/css-analyzer": "^6.0.0"
+    "@projectwallace/css-analyzer": "^7.0.2"
   },
   "devDependencies": {
     "typescript": "^5.7.3",