Python 3.12 syntax warnings

[Zethson]

/home/lukas/miniforge3/envs/lamindb/lib/python3.12/site-packages/mahotas/morph.py:315: SyntaxWarning: invalid escape sequence '\s' ''' /home/lukas/miniforge3/envs/lamindb/lib/python3.12/site-packages/mahotas/features/texture.py:33: SyntaxWarning: invalid escape sequence '|' ''' /home/lukas/miniforge3/envs/lamindb/lib/python3.12/site-packages/mahotas/features/texture.py:158: SyntaxWarning: invalid escape sequence '|'

These SyntaxWarnings are about invalid escape sequences in regular expressions in the mahotas library's Python files. The warnings point to:

\s in morph.py - should be \\s for whitespace matching
\| in texture.py - should be \\| for literal pipe character (occurring twice)