CI: Use Java 8 for MacOS build
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7373912..e1e8039 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -45,6 +45,7 @@
       - name: Set global environment variables
         run: |
           echo "BRANCH=${GITHUB_BASE_REF:-${GITHUB_REF#refs/heads/}}" >$GITHUB_ENV
+          echo "JAVA_HOME=${JAVA_HOME_8_X64}" >>$GITHUB_ENV
       - name: Check out code
         uses: actions/checkout@v4
       - name: Set up build