Use Yarn 2+

.github/workflows/front-end.yml

@@ -170,24 +170,30 @@ jobs:
             uses: "actions/[email protected]"
             with:
                 node-version: "18"
-                cache: "npm"
-                # cache: "yarn"
+                # cache: "npm"
+                cache: "yarn"
+        -
+            name: "Enable Yarn 2+"
+            run: |
+                corepack enable
+                yarn set version stable
+                yarn --version
         -
             name: "Enable strict engine checking"
-            run: "npm config set engine-strict true"
-            #run: "yarn config set engine-strict true"
+            # run: "npm config set engine-strict true"
+            run: "yarn config set engine-strict true"
         -
             name: "Install production dependencies"
-            run: "npm ci --omit=dev"
-            #run: "yarn install --non-interactive --pure-lockfile --production=true"
+            # run: "npm ci --omit=dev"
+            run: "yarn install --non-interactive --pure-lockfile --production=true"
         -
             name: "Checks for security vulnerability advisories"
-            run: "npm audit --omit=dev"
-            #run: "yarn audit"
+            # run: "npm audit --omit=dev"
+            run: "yarn audit"
         -
             name: "Build front-end"
-            run: "npm run prod:build"
-            #run: "yarn run prod:build"
+            # run: "npm run prod:build"
+            run: "yarn run prod:build"
         -
             name: "Check differences to repository"
             run: "git diff --exit-code"