Bump org.jenkins-ci.test:docker-fixtures

Bumps [org.jenkins-ci.test:docker-fixtures](https://github.com/jenkinsci/docker-fixtures) from 178.v2c7d2343886b_ to 190.vd6a_e600cb_775.
- [Release notes](https://github.com/jenkinsci/docker-fixtures/releases)
- [Changelog](https://github.com/jenkinsci/docker-fixtures/blob/master/old-changelog.md)
- [Commits](https://github.com/jenkinsci/docker-fixtures/commits)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.test:docker-fixtures
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pom.xml

@@ -118,7 +118,7 @@
         <dependency>
             <groupId>org.jenkins-ci.test</groupId>
             <artifactId>docker-fixtures</artifactId>
-            <version>178.v2c7d2343886b_</version>
+            <version>190.vd6a_e600cb_775</version>
             <scope>test</scope>
         </dependency>
         <dependency>