Revert "Explicitly specify bash shell on run steps"

[thomasrockhu-codecov]

Reverts #125

This will break on alpine builds

[codecov]

Codecov Report

Merging #134 (f3ee9e5) into master (9f87db2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #134   +/-   ##
=======================================
  Coverage   88.88%   88.88%           
=======================================
  Files           3        3           
  Lines          18       18           
=======================================
  Hits           16       16           
  Misses          2        2           

Flag	Coverage Δ
alpine	88.88% <ø> (?)
backend	85.71% <ø> (ø)
frontend	100.00% <ø> (ø)
linux	88.88% <ø> (ø)
macos	88.88% <ø> (ø)
version	100.00% <ø> (ø)
windows	88.88% <ø> (ø)

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