Test concurrency option for GitHub Actions

[lorenzwalthert]

No description provided.

[codecov-commenter]

Codecov Report

Merging #888 (5eb3b84) into main (1744cb3) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 5eb3b84 differs from pull request most recent head 709a383. Consider uploading reports for the commit 709a383 to get more accurate results

@@            Coverage Diff             @@
##             main     #888      +/-   ##
==========================================
+ Coverage   89.65%   89.67%   +0.01%     
==========================================
  Files          47       47              
  Lines        2514     2518       +4     
==========================================
+ Hits         2254     2258       +4     
  Misses        260      260              

Impacted Files	Coverage Δ
R/roxygen-examples.R	98.43% <100.00%> (+0.05%)	⬆️
R/transform-files.R	97.05% <100.00%> (+0.04%)	⬆️

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[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if 95eefe7 is merged into main:

•   :ballot_box_with_check:cache_applying: 35.7ms -> 36ms [-0.57%, +2.37%]
•   :ballot_box_with_check:cache_recording: 1.48s -> 1.49s [-0.27%, +1.08%]
•   :ballot_box_with_check:without_cache: 3.97s -> 3.97s [-0.69%, +0.52%]

Further explanation regarding interpretation and methodology can be found in the documentation.