Bluetooth: Samples: peripheral_hr: Optimize stack minimal sizes

Reduce stack sizes for peripheral_hr sample to minimal sizes.

Signed-off-by: Aleksander Wasaznik <[email protected]>

Author: alwa-nordic

samples/bluetooth/peripheral_hr/prj_minimal.conf

@@ -72,10 +72,10 @@ CONFIG_BUILTIN_STACK_GUARD=n
 CONFIG_BT_RX_STACK_SIZE=1024
 CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
 CONFIG_BT_HCI_TX_STACK_SIZE=640
-CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=1100
+CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=200
 CONFIG_BT_LONG_WQ_STACK_SIZE=1100
-CONFIG_IDLE_STACK_SIZE=128
-CONFIG_MAIN_STACK_SIZE=640
+CONFIG_IDLE_STACK_SIZE=64
+CONFIG_MAIN_STACK_SIZE=500
 CONFIG_ISR_STACK_SIZE=1024
 
 # Disable features not needed