fix: query response parser should use UTF-8 encoding

[bednar]

Closes #162

Proposed Changes

The response from InfluxDB server is encoded in UTF-8 => InputStreamReader should use UTF-8 as en encoding.

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-io]

Codecov Report

Merging #164 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master     #164   +/-   ##
=========================================
  Coverage     90.30%   90.30%           
  Complexity      439      439           
=========================================
  Files           138      138           
  Lines          5427     5427           
  Branches        215      213    -2     
=========================================
  Hits           4901     4901           
  Misses          450      450           
  Partials         76       76           

Impacted Files	Coverage Δ	Complexity Δ
...ava/com/influxdb/query/internal/FluxCsvParser.java	96.94% <100.00%> (ø)	0.00 <0.00> (ø)

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