Bump snakeyaml-engine from 2.5 to 2.6 (#499)

Bumps [snakeyaml-engine](https://bitbucket.org/snakeyaml/snakeyaml-engine) from 2.5 to 2.6.
- [Commits](https://bitbucket.org/snakeyaml/snakeyaml-engine/branches/compare/snakeyaml-engine-2.6..snakeyaml-engine-2.5)

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

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Michael R. Crusoe <1330696+mr-c@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -96,7 +96,7 @@
     <dependency>
       <groupId>org.snakeyaml</groupId>
       <artifactId>snakeyaml-engine</artifactId>
-      <version>2.5</version>
+      <version>2.6</version>
     </dependency>
     <!-- GraphViz/dot -->
     <dependency>