Update isort and linting configuration

[yakky]

Description

Update linting with isort 5 support and update pre-commit versions

References

Fix #188

Checklist

• I have read the contribution guide
• Code lint checked via inv lint
• changes file included (see docs)
• Usage documentation added in case of new features
• Tests added

[codecov]

Codecov Report

Merging #190 into develop will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop     #190   +/-   ##
========================================
  Coverage    91.80%   91.80%           
========================================
  Files            6        6           
  Lines          720      720           
  Branches       119      119           
========================================
  Hits           661      661           
  Misses          20       20           
  Partials        39       39           

Flag	Coverage Δ
#unittests	91.80% <100.00%> (ø)

Impacted Files	Coverage Δ
app_helper/main.py	88.37% <ø> (ø)
app_helper/base_test.py	94.66% <100.00%> (ø)
app_helper/utils.py	91.96% <100.00%> (ø)

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