[Utils] Define line-length for "ruff format" (#17125)

The `ruff format` tool is an alternative to the `black` formatter,
with significantly improved performance.  This commit updates the
`pyproject.toml` to include a configuration for `ruff format`, matched
to the configuration of `black`.

pyproject.toml

@@ -49,3 +49,7 @@ exclude = '''
   )/
 )
 '''
+
+[tool.ruff]
+line-length = 100
+indent-width = 4