linux-firmware: Update firmware patch for Intel Bluetooth 8260

This patch updates the firmware file for Intel Bluetooth 8260
also it is known as Intel Snowfield Peak (SfP)

FW Build: REL0473

Release Version: 20.60.0.2
Signed-off-by: Amit K Bag <amit.k.bag@intel.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -2976,9 +2976,9 @@ Version: BT_StonePeak_D0_REL_37_0002
 File: intel/ibt-hw-37.8.10-fw-22.50.19.14.f.bseq
 Version: BT_StonePeak_D1_REL_52_00001
 File: intel/ibt-11-5.ddc
-Version: LnP/SfP_REL0458
+Version: LnP/SfP_REL0473
 File: intel/ibt-11-5.sfi
-Version: BT_LightningPeak_REL0458
+Version: BT_LightningPeak_REL0473
 File: intel/ibt-12-16.ddc
 Version: BT_WindStormPeak_REL0226
 File: intel/ibt-12-16.sfi