refactor utils with pylint

[akapoor13]

In a Nutshell

Fix pylint messages in probnum.utils

Detailed Description

Refactors probnum.utils to comply with pylint line-too-long, no-else-return and else-if-used.

Related Issues

Closes #666

[codecov]

Codecov Report

Merging #683 (8bb4f86) into main (ae017dd) will not change coverage.
The diff coverage is 66.66%.

@@           Coverage Diff           @@
##             main     #683   +/-   ##
=======================================
  Coverage   89.93%   89.93%           
=======================================
  Files         192      192           
  Lines        7315     7315           
  Branches     1157     1157           
=======================================
  Hits         6579     6579           
  Misses        491      491           
  Partials      245      245           

Impacted Files	Coverage Δ
src/probnum/utils/linalg/_cholesky_updates.py	100.00% <ø> (ø)
src/probnum/utils/linalg/_inner_product.py	88.88% <ø> (ø)
src/probnum/utils/linalg/_orthogonalize.py	90.00% <ø> (ø)
src/probnum/utils/arrayutils.py	37.50% <66.66%> (ø)

[pnkraemer]

Thanks!

[akapoor13]

failing black CICD pipeline because of ImportError: cannot import name '_unicodefun' from 'click' in black src file

[JonathanWenger]

ImportError: cannot import name '_unicodefun' from 'click'

Possibly related issue: psf/black#2634

[pnkraemer]

Hex @akapoor13, it seems that due to the other pylint-PRs being merged more quickly than this one, merge conflicts were created. Please ping me once they are resolved and I will make sure to merge the PR swiftly :)

[akapoor13]

Hey @pnkraemer think we're good to go now