CI: Try 3

.github/workflows/build.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v2
@@ -21,4 +21,10 @@ jobs:
         version: master
 
     - name: Test
-        run: echo test
+      run: |
+        zig build test
+
+    - name: Build with latest zig & vk.xml
+      run: |
+        wget https://raw.githubusercontent.com/KhronosGroup/Vulkan-Docs/main/xml/vk.xml
+        zig build -Dvulkan-registry=./vk.xml