attempt to fix ci tests on win

emzed/ext/mzmine2/install_jre.py

@@ -66,8 +66,11 @@ def get_jre_home(folder=_default_jre_folder()):
 
 
 def set_java_home(folder=_default_jre_folder()):
-    print("FOLDER=", folder)
+    import os
+    print("set java home FOLDER=", folder)
     path = get_jre_home(folder)
+    print("jvm at", path)
+    print(os.listdir(os.path.dirname(path)))
     if path is None:
         raise RuntimeError(f"did not find jre, did you run download_jre()?")
     os.environ["JAVA_HOME"] = path