chore: fix makefile to run the tests

Author: fabclmnt

Makefile

@@ -10,7 +10,7 @@ test:
 	ydata_profiling -h
 
 test_spark:
-	pytest --spark_home=${SPARK_HOME} tests/backends/spark_backend/
+	pytest tests/backends/spark_backend/
 	ydata_profiling -h
 
 test_cov:
@@ -36,7 +36,7 @@ install-docs: install ### Installs regular and docs dependencies
 
 install-spark-ci:
 	sudo apt-get update
-	sudo apt-get -y install openjdk-8-jdk
+	sudo apt-get -y install openjdk-11-jdk
 	curl https://archive.apache.org/dist/spark/spark-${SPARK_VERSION}/spark-${SPARK_VERSION}-bin-hadoop${HADOOP_VERSION}.tgz \
 	--output ${SPARK_DIRECTORY}/spark.tgz
 	cd ${SPARK_DIRECTORY} && tar -xvzf spark.tgz && mv spark-${SPARK_VERSION}-bin-hadoop${HADOOP_VERSION} spark