ci: fix CI (#120)

Author: guybedford

.github/workflows/build.yml

@@ -17,12 +17,17 @@ jobs:
     continue-on-error: true
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-latest]
 
     steps:
       - name: Check out Git repository
         uses: actions/checkout@v2
 
+      - uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 17
+
       - name: Install wasi-sdk
         shell: bash
         run: |