Fix firefox tests?

.github/workflows/gradle.yml

@@ -20,9 +20,12 @@ permissions:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        firefox: [ '84.0', 'devedition-84.0b1', 'latest-beta', 'latest-devedition', 'latest-nightly', 'latest-esr', 'latest' ]
+
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK 17
@@ -31,10 +34,11 @@ jobs:
           java-version: '17'
           distribution: 'temurin'
 
-      - name: Install firefox
+      - name: Setup firefox
+        id: setup-firefox
         uses: browser-actions/setup-firefox@v1
         with:
-          firefox-version: latest
+          firefox-version: ${{ matrix.firefox }}
 
       - name: Run chmod to make gradlew executable
         run: chmod +x ./gradlew