Increase secure session pool size to 4096

Increase the maximum amount of secure sessions to 4 times the device
limit. This allows to have multiple sessions per device (if required) or
multiple fabrics of up to 1024 devices.

The size of a secure session is currently 264 bytes, so this will
increase memory usage by about 1MB.

Author: agners

CHIPProjectConfig.h

@@ -59,6 +59,8 @@
 // Home Assistant Python Matter server specific configs
 #define CHIP_EXCHANGE_NODE_ID_LOGGING 1
 #define CHIP_CONFIG_CONTROLLER_MAX_ACTIVE_DEVICES 1024
+#define CHIP_CONFIG_CONTROLLER_MAX_ACTIVE_CASE_CLIENTS 32
 #define CHIP_CONFIG_MAX_EXCHANGE_CONTEXTS 192
+#define CHIP_CONFIG_SECURE_SESSION_POOL_SIZE 4096
 
 #endif /* CHIPPROJECTCONFIG_H */