package/python-gpiozero: bump version to 1.6.2

package/python-gpiozero: bump version to 1.6.2

- update license file hash:
  @@ -1,3 +1,5 @@
  +SPDX-License-Identifier: BSD-3-Clause
  +

- add setuptools runtime dependency, fixes:

	$ pinout -r a020d3 -m
	Traceback (most recent call last):
	  File "/usr/bin/pinout", line 6, in <module>
	    from pkg_resources import load_entry_point
	ModuleNotFoundError: No module named 'pkg_resources'

For details see [1].

[1] https://gpiozero.readthedocs.io/en/stable/changelog.html

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>