Replace `pkg_resources.parse_version` with `packaging.version.Version`

[jwodder]

pkg_resources is deprecated and should no longer be used. This PR replaces the use of pkg_resources.parse_version() with its non-deprecated equivalent, packaging.version.Version.

[yarikoptic]

@satra ping on this PR. May be you could add me and @jwodder to "legit" contributors so at least workflows run without needing to be approved?

[codecov[bot]]

Codecov Report

Merging #44 (65d4237) into master (88adc39) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #44   +/-   ##
=======================================
  Coverage   83.56%   83.56%           
=======================================
  Files           3        3           
  Lines          73       73           
=======================================
  Hits           61       61           
  Misses         12       12           

Flag	Coverage Δ
unittests	83.56% <100.00%> (ø)

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Files	Coverage Δ
etelemetry/client.py	82.53% <100.00%> (ø)

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[satra]

i have added you as admins.

[jwodder]

@satra The tests are failing because codecov.io is having issues, and then the default fail-fast strategy for Actions matrices is causing all other running tests to be cancelled. I recommend the following:

• Set fail_ci_if_error: false in the codecov step in the workflow
• (Optional) Add fail-fast: false under strategy: in the workflow

[yarikoptic]

both sound good to me @jwodder , let's proceed that way

[satra]

released.

[effigies]

Thanks, @satra!