fix (samples) Import user events BQ, missing UpdateUserEventsJson.java

[dfirova]

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Fixes #<issue_number_goes_here> ☕️

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[alicejli]

Should there be some comments in the file explaining what UpdateUserEventsJson.java is for? I noticed none of the files in java-retail/samples/interactive-tutorials/src/main/java/events/setup/ have comments, so perhaps it's not needed; I'm not familiar with what these are for.

[dfirova]

Should there be some comments in the file explaining what UpdateUserEventsJson.java is for? I noticed none of the files in java-retail/samples/interactive-tutorials/src/main/java/events/setup/ have comments, so perhaps it's not needed; I'm not familiar with what these are for.

As all the other files in setup don't contain description, the correct way of resolving it, in my opinion, would be adding all the descriptions in a separate task (PR), if the decision is made to do so.

[alicejli]

Okay that makes sense to me. Will file an issue against this repo to do so in the future.