Migrate `trino-parquet` from TestNG to JUnit

[findepi]

Remove dependency

trino/lib/trino-parquet/pom.xml

Lines 238 to 242 in c37191d

	<dependency>
	<groupId>org.testng</groupId>
	<artifactId>testng</artifactId>
	<scope>test</scope>
	</dependency>

migrate remaining tests to JUnit.

This can be done in steps, i.e. migrate some tests, then some more, etc.

[ozakidai]

Hi, can I work on this?

[findepi]

sure, go for it! thanks

i'd suggest to work on this incrementally. maybe even one test at a time to start with.