fix: always close pure OkHttp3 response

[bednar]

Closes #146

Proposed Changes

The pure OkHttp3 response (not Retrofit) should be always closed.

Checklist

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

[codecov-commenter]

Codecov Report

Merging #151 into master will decrease coverage by 0.07%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #151      +/-   ##
============================================
- Coverage     90.46%   90.39%   -0.08%     
  Complexity      439      439              
============================================
  Files           137      137              
  Lines          5393     5393              
  Branches        204      206       +2     
============================================
- Hits           4879     4875       -4     
- Misses          439      441       +2     
- Partials         75       77       +2     

Impacted Files	Coverage Δ	Complexity Δ
...luxdb/client/internal/AuthenticateInterceptor.java	98.27% <100.00%> (ø)	0.00 <0.00> (ø)
.../influxdb/client/internal/AbstractWriteClient.java	89.57% <0.00%> (-1.90%)	0.00% <0.00%> (ø%)

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