Bump org.yaml:snakeyaml from 2.0 to 2.2

Bumps [org.yaml:snakeyaml](https://bitbucket.org/snakeyaml/snakeyaml) from 2.0 to 2.2.
- [Commits](https://bitbucket.org/snakeyaml/snakeyaml/branches/compare/snakeyaml-2.2..snakeyaml-2.0)

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

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

pom.xml

@@ -738,7 +738,7 @@
             <dependency>
                 <groupId>org.yaml</groupId>
                 <artifactId>snakeyaml</artifactId>
-                <version>2.0</version>
+                <version>2.2</version>
             </dependency>
             <dependency>
                 <groupId>net.oneandone.reflections8</groupId>