chore(test): remove deprecated junit-platform-runner

[bednar]

Closes #327

Proposed Changes

This PR removes dependency to deprecated junit-platform-runner package.

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• mvn test completes successfully
• Commit messages are conventional
• Sign CLA (if not already signed)

[codecov-commenter]

Codecov Report

Merging #418 (6987448) into master (b410e4d) will increase coverage by 0.14%.
The diff coverage is n/a.

❗ Current head 6987448 differs from pull request most recent head 1a95d2f. Consider uploading reports for the commit 1a95d2f to get more accurate results

@@             Coverage Diff              @@
##             master     #418      +/-   ##
============================================
+ Coverage     88.22%   88.36%   +0.14%     
- Complexity      775      776       +1     
============================================
  Files           172      172              
  Lines          6987     6987              
  Branches        375      375              
============================================
+ Hits           6164     6174      +10     
+ Misses          712      701      -11     
- Partials        111      112       +1     

Impacted Files	Coverage Δ
...com/influxdb/client/flux/internal/FluxApiImpl.java	100.00% <0.00%> (+2.41%)	⬆️
...influxdb/client/internal/InfluxQLQueryApiImpl.java	89.55% <0.00%> (+7.46%)	⬆️
...ava/com/influxdb/query/dsl/VariableAssignment.java	75.00% <0.00%> (+12.50%)	⬆️

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