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Update Dockerfile 

bump python version to 3.9.12 

Merge pull request #8 from alexisdondon/py4j-version-change py4J 0.10.9.3 for spark 3.2.1

Merge pull request #7 from alexisdondon/version3.2.1_and_authentication spark version and custom authentication jar for spark-sql

install plotly in docker file to fix empty plots 

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python 3.7.6 - spark 3.1.1 - hadoop 3.2.1 - hive 2.3.7 - jupyterlab 1… ….2.5

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Update .travis.yml