fix: pom.xml to reduce vulnerabilities (#1243)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGYAML-537645

Author: snyk-bot

pom.xml

@@ -273,7 +273,7 @@
 			<!-- Apache 2.0 -->
 			<groupId>org.yaml</groupId>
 			<artifactId>snakeyaml</artifactId>
-			<version>1.20</version>
+			<version>1.26</version>
 		</dependency>
 
 		<!-- Apache commons IO -->