First stab at ESP32-C6 support for TLora-C6

src/serialization/JSON.cpp

@@ -184,7 +184,7 @@ bool JSON::ExtractString(const char **data, std::string &str)
         // End of the string?
         else if (next_char == '"') {
             (*data)++;
-            str.reserve(); // Remove unused capacity
+            str.shrink_to_fit(); // Remove unused capacity
             return true;
         }