Fix stylelint workflow

.github/workflows/quality.yml

@@ -56,8 +56,8 @@ jobs:
       - name: Run eslint
         run: npx eslint --quiet "."
 
-  run-stylelint-css:
-    name: Run stylelint (css)
+  run-stylelint:
+    name: Run stylelint
     runs-on: ubuntu-latest
 
     steps:
@@ -78,31 +78,7 @@ jobs:
         run: npm ci --no-audit
 
       - name: Run stylelint
-        run: npm run stylelint:css
-
-  run-stylelint-scss:
-    name: Run stylelint (scss)
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Check out Git repository
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-
-      - name: Setup node environment
-        uses: actions/setup-node@b39b52d1213e96004bfcb1c61a8a6fa8ab84f3e8 # v4.0.1
-        with:
-          node-version: 20
-          check-latest: true
-          cache: npm
-
-      - name: Set up stylelint matcher
-        uses: xt0rted/stylelint-problem-matcher@34db1b874c0452909f0696aedef70b723870a583 # tag=v1
-
-      - name: Install Node.js dependencies
-        run: npm ci --no-audit
-
-      - name: Run stylelint
-        run: npm run stylelint:scss
+        run: npm run stylelint
 
   run-tsc:
     name: Run TypeScript build check