Bump docker-maven-plugin from 0.39.1 to 0.40.0

Bumps [docker-maven-plugin](https://github.com/fabric8io/docker-maven-plugin) from 0.39.1 to 0.40.0.
- [Release notes](https://github.com/fabric8io/docker-maven-plugin/releases)
- [Changelog](https://github.com/fabric8io/docker-maven-plugin/blob/master/doc/changelog.md)
- [Commits](fabric8io/docker-maven-plugin@v0.39.1...v0.40.0)

---
updated-dependencies:
- dependency-name: io.fabric8:docker-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build-parent/pom.xml

@@ -123,7 +123,7 @@
 
 
         <asciidoctor-maven-plugin.version>2.0.0</asciidoctor-maven-plugin.version>
-        <docker-maven-plugin.version>0.39.1</docker-maven-plugin.version>
+        <docker-maven-plugin.version>0.40.0</docker-maven-plugin.version>
         <formatter-maven-plugin.version>2.18.0</formatter-maven-plugin.version>
         <impsort-maven-plugin.version>1.6.2</impsort-maven-plugin.version>
         <maven-invoker-plugin.version>3.2.2</maven-invoker-plugin.version>