Updating devtools, removing dashboard

[PGijsbers]

Doing some maintenance work here.
Originally I intended to just update devtools, but the outdated dependencies of the Dashboard made it more cumbersome than needed, so I decided to finally pull the trigger and remove the dashboard altogether. Removing the Dashboard had been something I had been planning to do for longer. Separating the dashboard into its own project makes it easier to separate dependencies between the two if their only interface is the log file. Originally I wanted to extract the Dashboard code, but since then enough time has passed that the Dashboard should be more-or-less built from the ground up anyway (and the git history remains available, of course).

As for the devtools, I'm currently figuring out what exactly I want but:

• I am bumping dependencies of the ones that are currently in use
• I am changing from flake8 to ruff

Also made a few changes to make tests green. Seems like an appropriate time to go for a merge before continuing to further update the devtool stack.

[github-actions]

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[codecov]

Codecov Report

Merging #192 (c0c7ea2) into master (9596bf0) will increase coverage by 20.87%.
The diff coverage is 73.33%.

@@             Coverage Diff             @@
##           master     #192       +/-   ##
===========================================
+ Coverage   68.26%   89.13%   +20.87%     
===========================================
  Files          45       45               
  Lines        2187     2191        +4     
===========================================
+ Hits         1493     1953      +460     
+ Misses        694      238      -456     

Flag	Coverage Δ
unit-tests	89.13% <73.33%> (+20.87%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
gama/configuration/regression.py	100.00% <ø> (ø)
gama/genetic_programming/mutation.py	95.16% <ø> (+3.22%)	⬆️
gama/postprocessing/best_fit.py	80.00% <ø> (ø)
gama/utilities/evaluation_library.py	89.68% <ø> (+7.14%)	⬆️
gama/utilities/generic/async_evaluator.py	68.30% <0.00%> (+51.27%)	⬆️
gama/gama.py	84.77% <33.33%> (+30.19%)	⬆️
gama/genetic_programming/compilers/scikitlearn.py	77.01% <100.00%> (ø)
gama/genetic_programming/components/terminal.py	100.00% <100.00%> (ø)
gama/genetic_programming/operations.py	100.00% <100.00%> (ø)
gama/genetic_programming/selection.py	100.00% <100.00%> (+4.34%)	⬆️
... and 5 more

... and 11 files with indirect coverage changes

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[github-actions]

Thank you for the pull request! 🙏
If CI reports any errors please address them.
If you believe the errors are unrelated to your PR, please state why.
This will make it easier for the maintainers to assess your PR :)