Prepare for release of v2023.10.31

src/ZuluSCSI_config.h

@@ -28,8 +28,8 @@
 #include <ZuluSCSI_platform.h>
 
 // Use variables for version number
-#define FW_VER_NUM      "23.10.30"
-#define FW_VER_SUFFIX   "dev"
+#define FW_VER_NUM      "23.10.31"
+#define FW_VER_SUFFIX   "release"
 #define ZULU_FW_VERSION FW_VER_NUM "-" FW_VER_SUFFIX
 
 // Configuration and log file paths