Bump org.liquibase:liquibase-parent-pom from 0.5.5 to 0.5.6

Bumps [org.liquibase:liquibase-parent-pom](https://github.com/liquibase/liquibase-parent-pom) from 0.5.5 to 0.5.6.
- [Release notes](https://github.com/liquibase/liquibase-parent-pom/releases)
- [Commits](liquibase/liquibase-parent-pom@v0.5.5...v0.5.6)

---
updated-dependencies:
- dependency-name: org.liquibase:liquibase-parent-pom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.liquibase</groupId>
         <artifactId>liquibase-parent-pom</artifactId>
-        <version>0.5.5</version> <!-- Replace with the desired version -->
+        <version>0.5.6</version> <!-- Replace with the desired version -->
     </parent>
 
     <groupId>org.liquibase.ext</groupId>