fix: upgrade io.reactivex.rxjava3:rxjava from 3.1.8 to 3.1.9

Snyk has created this PR to upgrade io.reactivex.rxjava3:rxjava from 3.1.8 to 3.1.9.

See this package in maven:
io.reactivex.rxjava3:rxjava

See this project in Snyk:
https://app.snyk.io/org/contentstack-devex/project/91aa54d8-824d-4e38-9e2d-c4e5f96c011d?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>3.4.1</maven-javadoc-plugin.version>
         <dotenv-source.version>3.0.0</dotenv-source.version>
-        <rxjava-source.version>3.1.8</rxjava-source.version>
+        <rxjava-source.version>3.1.9</rxjava-source.version>
         <retrofit-source.version>2.11.0</retrofit-source.version>
         <loggin.version>5.0.0-alpha.11</loggin.version>
         <jococo-plugin.version>0.8.5</jococo-plugin.version>