Persiste cash across CI runs

Author: garronej

.github/workflows/ci.yaml

@@ -17,6 +17,8 @@ jobs:
     - uses: bahmutov/npm-install@v1
     - run: yarn build
     - run: npx keycloakify
+      env:
+        XDG_CACHE_HOME: "/home/runner/.cache/yarn"
 
   check_if_version_upgraded:
     name: Check if version upgrade
@@ -45,6 +47,8 @@ jobs:
     - uses: bahmutov/npm-install@v1
     - run: yarn build
     - run: npx keycloakify
+      env:
+        XDG_CACHE_HOME: "/home/runner/.cache/yarn"
     - run: mv build_keycloak/target/*.jar keycloak-theme.jar
     - uses: softprops/action-gh-release@v1
       with: