Update build workflow to use root node_modules

Signed-off-by: Thomas A. Christensen II <25492070+MillironX@users.noreply.github.com>

.github/workflows/build-site.yml

@@ -15,8 +15,6 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: lts/*
-          cache: npm
-          cache-dependency-path: assets/package-lock.json
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v2
         with:
@@ -26,19 +24,17 @@ jobs:
         run: |
           npm config set "@fortawesome:registry" https://npm.fontawesome.com/
           npm config set "//npm.fontawesome.com/:_authToken" ${{ secrets.FONTAWESOME_TOKEN }}
-      - name: Install global npm packages
+      - name: Install postcss
         run: |
-          npm install postcss@^8.4.6 postcss-cli@^9.1.0 @fullhuman/postcss-purgecss@^2.0.3
+          npm -g install postcss-cli
-          npm -g install postcss@^8.4.6 postcss-cli@^9.1.0 @fullhuman/postcss-purgecss@^2.0.3
+      - name: Install npm packages
-      - name: Install local npm packages
         run: |
-          cd assets
           npm install
-          cd ..
       - name: Run Hugo
         run: |
           hugo
       - name: Deploy to gh-pages
+        if: ${{ !env.ACT }}
         uses: rdarida/simple-github-pages-deploy-action@v1
         with:
           git-user: "MillironX"