Bump org.snakeyaml:snakeyaml-engine from 2.8 to 2.9 (#1149)

Bumps [org.snakeyaml:snakeyaml-engine](https://bitbucket.org/snakeyaml/snakeyaml-engine) from 2.8 to 2.9.
- [Commits](https://bitbucket.org/snakeyaml/snakeyaml-engine/branches/compare/snakeyaml-engine-2.9..snakeyaml-engine-2.8)

---
updated-dependencies:
- dependency-name: org.snakeyaml:snakeyaml-engine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -99,7 +99,7 @@
       <dependency>
         <groupId>org.snakeyaml</groupId>
         <artifactId>snakeyaml-engine</artifactId>
-        <version>2.8</version>
+        <version>2.9</version>
       </dependency>
       <dependency>
         <groupId>org.commonmark</groupId>