Add jvm opts to scala steward

Author: mdedetrich

.github/workflows/scala-steward.yml

@@ -11,6 +11,8 @@ jobs:
     steps:
       - name: Launch Scala Steward
         uses: scala-steward-org/scala-steward-action@v2
+        env:
+          JAVA_OPTS: "-Xmx4g"
         with:
           github-app-id: ${{ secrets.SCALA_STEWARD_APP_ID }}
           github-app-installation-id: ${{ secrets.SCALA_STEWARD_INSTALLATION_ID }}