gnu: gunicorn: Add bash-minimal to satisfy linter.

* gnu/packages/python-web.scm (gunicorn)[inputs]: Add bash-minimal.

Change-Id: I4d63f9c0d2c1b02f6e2d701fac9698c57a95223a

gnu/packages/python-web.scm

@@ -6164,6 +6164,7 @@ event loop.  It is implemented in Cython and uses libuv under the hood.")
                    ,(map (lambda (output)
                            (string-append output sitedir))
                          (list python out))))))))))
+    (inputs (list bash-minimal))
     (native-inputs
      (list binutils ;; for ctypes.util.find_library()
            python-aiohttp