[ci] Split the test job into two jobs

Add a dedicated build job to continue building binaries on Ubuntu 18.04.

.github/workflows/ci.yml

@@ -19,6 +19,32 @@ jobs:
           - 14
           - 16
           - 17
+        os:
+          - macos-latest
+          - ubuntu-latest
+          - windows-latest
+        exclude:
+          - arch: x86
+            os: macos-latest
+          - arch: x86
+            os: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+          architecture: ${{ matrix.arch }}
+      - run: npm install
+      - run: npm test
+  build:
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: test
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        arch:
+          - x64
+          - x86
         os:
           - macos-latest
           - ubuntu-18.04
@@ -32,27 +58,20 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node }}
+          node-version: 14
           architecture: ${{ matrix.arch }}
       - run: npm install
-      - run: npm test
       - run: npm run prebuild
-        if:
-          matrix.node == 14 && matrix.os != 'macos-latest' &&
-          startsWith(github.ref, 'refs/tags/')
+        if: matrix.os != 'macos-latest'
       - run: npm run prebuild-darwin-x64+arm64
-        if:
-          matrix.node == 14 && matrix.os == 'macos-latest' &&
-          startsWith(github.ref, 'refs/tags/')
+        if: matrix.os == 'macos-latest'
       - uses: actions/upload-artifact@v3
-        if: matrix.node == 14 && startsWith(github.ref, 'refs/tags/')
         with:
           name: ${{ matrix.os }}
           path: prebuilds
           retention-days: 1
   release:
-    if: startsWith(github.ref, 'refs/tags/')
-    needs: test
+    needs: build
     permissions:
       contents: write # Needed for softprops/action-gh-release.
     runs-on: ubuntu-latest