upgrade bluez from 5.44 to 5.45
upgrade bluez from 5.44 to 5.45

drop --enable-experimental

upgrade bluez from 5.44 to  5.45. Changes:
Fix issue with agent support in Bluetooth client tool.
Fix issue with handling re-connection policy.
Fix issue with handling unknown ATT commands.
Fix issue with handling GATT Service Includes property.
Fix issue with handling PullAll for OBEX transfers.
Fix issue with handling delay in AVDTP Suspend responses.
Fix issue with handling decoding of management frames.
Add support for frame counters in Bluetooth monitor tool.

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