refactor(pnpm workspaces): we need to reference our packages correctly

Author: mfranzke

packages/postcss-if-function/package.json

@@ -55,7 +55,7 @@
     "postcss": "8.0.0"
   },
   "dependencies": {
-    "css-if-polyfill": "0.1.3"
+    "css-if-polyfill": "workspace:*"
   },
   "devDependencies": {
     "microbundle": "0.15.1",