Merge pull request #58 from belgattitude/doc-adapt-to-new-github-env

Doc update to account for deprecated `set-output`.

README.md

@@ -120,12 +120,12 @@ jobs:
       - name: Get pnpm store directory
         id: pnpm-cache
         run: |
-          echo "::set-output name=pnpm_cache_dir::$(pnpm store path)"
+          echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
 
       - uses: actions/cache@v3
         name: Setup pnpm cache
         with:
-          path: ${{ steps.pnpm-cache.outputs.pnpm_cache_dir }}
+          path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
           key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
             ${{ runner.os }}-pnpm-store-