CI: test zulu now that we do not use virtual threads anymore

.github/workflows/gradle.yml

@@ -18,7 +18,6 @@ on:
 
 env:
   COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
-  JDK_DISTRO: 'temurin'
 
 jobs:
   build:
@@ -27,15 +26,16 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest, macOS-latest, windows-latest]
-        jdk: [ 21 ]  # (open)JDK releases
+        jdk: [ 21 ]
+        distro: ['temurin', 'zulu']
 
     steps:
     - uses: actions/checkout@v4
     - name: Set up openJDK version
       uses: actions/setup-java@v4
       with:
         java-version: ${{ matrix.jdk }}
-        distribution: ${{ env.JDK_DISTRO }}
+        distribution: ${{ matrix.distro }}
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v4
     - name: Build and Test with Gradle
@@ -46,7 +46,8 @@ jobs:
     - name: Docker build and test
       if: matrix.operating-system == 'ubuntu-latest' && matrix.jdk == 21
       run: |
-        curl --location --remote-name https://github.com/Orange-OpenSource/hurl/releases/download/4.0.0/hurl_4.0.0_amd64.deb
-        sudo dpkg -i hurl_4.0.0_amd64.deb
+        VERSION=6.0.0
+        curl --location --remote-name https://github.com/Orange-OpenSource/hurl/releases/download/$VERSION/hurl_${VERSION}_amd64.deb
+        sudo apt update && sudo apt install ./hurl_${VERSION}_amd64.deb
         time bash ./docker/test_docker.sh
       shell: bash