connman: update to 1.39

Bug fix only and includes two security fixes:

CVE-2021-26675
CVE-2021-26676

Changelog:
- Fix issue with scanning state synchronization and iwd.
- Fix issue with invalid key with 4-way handshake offloading.
- Fix issue with DNS proxy length checks to prevent buffer overflow.
- Fix issue with DHCP leaking stack data via uninitialized variable.

[Yocto #14231]

Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>