Bump snakeyaml from 1.27 to 1.28

Bumps [snakeyaml](https://bitbucket.org/asomov/snakeyaml) from 1.27 to 1.28.
- [Commits](https://bitbucket.org/asomov/snakeyaml/branches/compare/snakeyaml-1.28..snakeyaml-1.27)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

pom.xml

@@ -70,7 +70,7 @@
 		<dependency>
 			<groupId>org.yaml</groupId>
 			<artifactId>snakeyaml</artifactId>
-			<version>1.26</version>
+			<version>1.28</version>
 		</dependency>
 		<dependency>
 			<groupId>com.github.jabbalaci</groupId>