Ignore any .venv* directories (#618)

Different variants of .venv* directories can be used for different
environments. Ensure they are all ignored properly by git and by
prettier.

Author: nikobockerman

.gitignore

@@ -2,7 +2,7 @@
 .mypy_cache/
 .pytest_cache/
 .ruff_cache/
-.venv/
+.venv*/
 __pycache__/
 
 /inputs/