chore(Workflows): updated for yarn

Author: thatblindgeye

.github/workflows/pr-preview.yml

@@ -24,13 +24,14 @@ jobs:
       - uses: actions/setup-node@v1
         with:
           node-version: '18'
+      - run: corepack enable
       - uses: actions/cache@v4
         id: yarn-cache
         name: Load npm deps from cache
         with:
           path: '**/node_modules'
           key: ${{ runner.os }}-yarn-14-${{ hashFiles('yarn.lock') }}
-      - run: yarn install --frozen-lockfile
+      - run: yarn install --immutable
         if: steps.yarn-cache.outputs.cache-hit != 'true'
       - run: yarn lint:js
         name: Lint JS

.github/workflows/promote.yml

@@ -13,12 +13,13 @@ jobs:
       NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
     steps:
       - uses: actions/checkout@v2
-      - name: Build for promotion
-        run: yarn install --frozen-lockfile && yarn build
       - uses: actions/setup-node@v3
         with:
           node-version: '18.x'
           registry-url: 'https://registry.npmjs.org'
+      - run: corepack enable
+      - name: Build for promotion
+        run: yarn install --immutable && yarn build
       - name: GitHub Tag Name example
         run: |
           echo "Tag name from GITHUB_REF_NAME: $GITHUB_REF_NAME"