fix: upgrade org.jsoup:jsoup from 1.18.3 to 1.21.1

Snyk has created this PR to upgrade org.jsoup:jsoup from 1.18.3 to 1.21.1.

See this package in maven:
org.jsoup:jsoup

See this project in Snyk:
https://app.snyk.io/org/contentstack-devex/project/35eb6853-a9a8-45f1-95e3-3d10f936243e?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

pom.xml

@@ -20,7 +20,7 @@
         <maven-source-plugin.version>2.2.1</maven-source-plugin.version>
         <maven-javadoc-plugin.version>3.1.1</maven-javadoc-plugin.version>
         <junit.version>4.13.2</junit.version>
-        <jsoup.version>1.18.3</jsoup.version>
+        <jsoup.version>1.21.1</jsoup.version>
         <json.simple.version>1.1.1</json.simple.version>
         <maven-site-plugin.version>3.3</maven-site-plugin.version>
         <maven-gpg-plugin.version>1.5</maven-gpg-plugin.version>