fix: try to revert to yarn 2.4 for calculate size step

Author: Adzouz

.github/workflows/bundle-size.yml

@@ -30,7 +30,7 @@ jobs:
           key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
 
       - name: Install deps
-        run: yarn install --immutable
+        run: yarn install
 
       - name: Build
         run: yarn build --filter=\!@strapi/design-system-docs