Consolidate jobs in GitHub Action

Having separate test and deploy jobs is not necessary, and
essentially duplicates the same workflow twice.

.github/workflows/deploy.yml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  test:
+  deploy:
     runs-on: ubuntu-latest
 
     steps:
@@ -17,9 +17,6 @@ jobs:
       - name: Setup emsdk
         uses: mymindstorm/setup-emsdk@v14
 
-      - name: Build WebAssembly modules
-        run: npm run prebuild
-
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
@@ -33,32 +30,12 @@ jobs:
         with:
           chrome-version: stable
 
-      - name: Run Tests
-        run: npm run test
-
-  deploy:
-    needs: test
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup emsdk
-        uses: mymindstorm/setup-emsdk@v14
-
-      - name: Setup Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: 20
-
-      - name: Install npm dependencies
-        run: npm ci
-
       - name: Build
         run: npm run build # Also builds WebAssembly modules.
 
+      - name: Run Tests
+        run: npm run test
+
       - name: Deploy on Cloudflare Pages
         uses: cloudflare/pages-action@v1
         with: