python 3.9 support?

[blshkv]

Hello,

I'm trying to create the environment and facing this problem:

./EnvDeploy --list
Traceback (most recent call last):
  File "/home/blshkv/Downloads/hardware_home/synology/toolkit/pkgscripts-ng/./EnvDeploy", line 328, in <module>
    main(sys.argv[1:])
  File "/home/blshkv/Downloads/hardware_home/synology/toolkit/pkgscripts-ng/./EnvDeploy", line 306, in main
    platforms = get_platforms(dsm_ver, build_num, args.platforms)
  File "/home/blshkv/Downloads/hardware_home/synology/toolkit/pkgscripts-ng/./EnvDeploy", line 270, in get_platforms
    all_platforms = get_all_platforms(dsm_ver, build_num)
  File "/home/blshkv/Downloads/hardware_home/synology/toolkit/pkgscripts-ng/./EnvDeploy", line 249, in get_all_platforms
    pattern = 'AvailablePlatform_%s_%s' % (dsm_ver.split('.')[0], dsm_ver.split('.')[1])
IndexError: list index out of range

Can specify what version of python is supported and fix scripts with 3.9?