added comment for downgrading

Author: gem-vinayprashar

libraries-data-io/pom.xml

@@ -88,6 +88,7 @@
     </dependencies>
 
     <properties>
+        <!-- Downgraded SNAKEYAML version 1.30 to demonstrate the vulnerability scenario (CVE-2022-1471) -->
         <snakeyaml.version>1.30</snakeyaml.version>
         <opencsv.version>5.8</opencsv.version>
         <google-api.version>1.23.0</google-api.version>