chore: update lint globs to cover fixtures

Author: web-padawan

package.json

@@ -19,9 +19,9 @@
     "format:package": "prettier \"**/package.json\" --write",
     "format:ts": "prettier \"**/*.ts\" --write",
     "lint": "npm-run-all --parallel lint:*",
-    "lint:css": "stylelint packages/**/*.ts",
-    "lint:eslint": "eslint packages scripts",
-    "lint:lit": "lit-analyzer packages --strict",
+    "lint:css": "stylelint packages/**/src/*.ts fixtures/**/src/*.ts",
+    "lint:eslint": "eslint packages fixtures scripts",
+    "lint:lit": "lit-analyzer packages/**/src/*.ts fixtures/**/src/*.ts --strict",
     "postinstall": "patch-package",
     "release": "changeset publish && yarn format",
     "serve": "web-dev-server --node-resolve",