package/python-gunicorn: select python-setuptools

Fixes:
 - https://bugs.buildroot.org/show_bug.cgi?id=13111

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/python-gunicorn/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_PYTHON_GUNICORN
 	bool "python-gunicorn"
+	select BR2_PACKAGE_PYTHON_SETUPTOOLS # runtime
 	select BR2_PACKAGE_PYTHON_SSL if BR2_PACKAGE_PYTHON # runtime
 	select BR2_PACKAGE_PYTHON3_SSL if BR2_PACKAGE_PYTHON3 # runtime
 	help