testing/thermald: upgrade to 2.4.9

https://github.com/intel/thermal_daemon/blob/2c862048/README.txt#L114=

Release 2.4.9
- Fix performance issues for Dell Latitude 5421
- Fix performance issues for Dell Latitude 7320/7420
(Depend on kernel patch "thermal: int340x: Update OS policy capability handshake")
- Adaptive improvements from Benzea
- Thermal Monitor fixes and cosmetic updates
- Documentation updates from Colin King
- Static analysis fixes from Benzea
- Fix test for compressed data vaults


Release 2.4.8
- Fix Ideapad thermal shutdown issue #328