Fixes test suite for the breaking changes to node packages (#11)

Author: kritzcreek

.github/workflows/ci.yml

@@ -14,9 +14,9 @@ jobs:
 
       - uses: purescript-contrib/setup-purescript@main
         with:
-          purescript: "0.15.0"
-          purs-tidy: "0.8.0"
-          spago: "0.20.9"
+          purescript: "0.15.12"
+          purs-tidy: "0.10.0"
+          spago: "0.21.0"
 
       - name: Build source
         run: spago build