Changed Github runner from Conda to Mamba

[ben-l-p]

Changed Github runner from Conda to Mamba

The recent change to the new Conda environment involved swapping out minimal environment used by the Github runner to the regular environment. This causes the Ubuntu runner to fail due to running out of its 7GB of RAM, and so new SHARPy versions could not be verified.

To fix this, Conda has been swapped out with Mamba, which is a faster and less memory-intensive drop-in replacement. This should not have any effect on running SHARPy.

Fixed Typos in Linear_Goland_Flutter.ipynb

Small errors in example notebook have been fixed, should not have any effect on the results.

[kccwing]

Thanks! @ben-l-p

[codecov-commenter]

Codecov Report

Merging #265 (5a1b2da) into main (b938c5f) will not change coverage.
The diff coverage is n/a.

❗ Current head 5a1b2da differs from pull request most recent head ac2f321. Consider uploading reports for the commit ac2f321 to get more accurate results

@@           Coverage Diff           @@
##             main     #265   +/-   ##
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  Coverage   67.69%   67.69%           
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  Files         166      166           
  Lines       26709    26709           
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  Hits        18081    18081           
  Misses       8628     8628           

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