Double the number of bluetooth bonds NimBLE will store (from 3 to 6) (#8296)

Author: thebentern

arch/esp32/esp32.ini

@@ -31,6 +31,7 @@ build_flags =
   -DMYNEWT_VAL_BLE_HS_LOG_LVL=LOG_LEVEL_CRITICAL
   -DAXP_DEBUG_PORT=Serial
   -DCONFIG_BT_NIMBLE_ENABLED
+  -DCONFIG_BT_NIMBLE_MAX_BONDS=6 # default is 3
   -DCONFIG_NIMBLE_CPP_LOG_LEVEL=2
   -DCONFIG_BT_NIMBLE_MAX_CCCDS=20
   -DCONFIG_BT_NIMBLE_HOST_TASK_STACK_SIZE=8192