Update to use GenText

changed GenerateText to GenText, with reversed return polarity.

updated flatbuffer to v23.5.26, and regenerated headers

Signed-off-by: Tai Ly <tai.ly@arm.com>
Change-Id: I7278dfe9c7b55b9afbe2329e3058b63a1cdce586
diff --git a/src/tosa_serialization_handler.cpp b/src/tosa_serialization_handler.cpp
index bed79b2..de7efb1 100644
--- a/src/tosa_serialization_handler.cpp
+++ b/src/tosa_serialization_handler.cpp
@@ -272,7 +272,7 @@
 
     uint8_t* buf = _builder.GetBufferPointer();
 
-    if (!GenerateText(_parser, buf, &jsongen))
+    if (GenText(_parser, buf, &jsongen))
     {
         printf("Couldn't serialize parsed data to JSON!\n");
         return TOSA_FILE_ERROR;