Migrate to helix-fetch and re-enable HTTP/2

[stefan-guggisberg]

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[github-actions]

This PR will trigger a patch release when merged.

[codecov]

Codecov Report

Merging #262 (95251ed) into main (cdecb54) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #262   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           11        11           
  Lines          338       338           
=========================================
  Hits           338       338           

Impacted Files	Coverage Δ
src/matchers/excel.js	100.00% <ø> (ø)
src/index.js	100.00% <100.00%> (ø)
src/matchers/run-query.js	100.00% <100.00%> (ø)

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[trieloff]

🎉 This PR is included in version 2.3.8 🎉

The release is available on:

• v2.3.8
• GitHub release

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