Fix python linting/formatting error when in virtual environment (#4865)

Python fixers and linters were failing when vim is running in a virtual
environment that's located in a path containing text `poetry`. The cause
of this was the regular expression `poetry\|pipenv\|uv$` which matches
`poetry` and `pipenv` if they appear anywhere in the virtualenv path.

ale_linters/python/bandit.vim

@@ -45,7 +45,7 @@ function! ale_linters#python#bandit#GetCommand(buffer) abort
         endif
     endif
 
-    let l:exec_args = l:executable =~? 'pipenv\|poetry\|uv$'
+    let l:exec_args = l:executable =~? '\(pipenv\|poetry\|uv\)$'
     \   ? ' run bandit'
     \   : ''