AWS: Cleanup warning about Lambda should be method reference

[amogh-jahagirdar]

Cleans up a warning I see in the build for the AWS integ tests:

/Users/jahamogh/workplace/iceberg-jahamogh/iceberg/aws/src/integration/java/org/apache/iceberg/aws/lakeformation/TestLakeFormationMetadataOperations.java:244: warning: [LambdaMethodReference] Lambda should be a method reference
          () -> updateProperties.commit());

      ^

[jackye1995]

thanks for the fix!

[jackye1995]

I will just merge this because it is a simple style fix, thanks for the work!

[amogh-jahagirdar]

Thanks for the review Jack!