Bump docker-registry from 2022-04-10T17-15-00 to 2022-04-21T23-12-00

Bumps [docker-registry](https://github.com/docker-client/docker-registry) from 2022-04-10T17-15-00 to 2022-04-21T23-12-00.
- [Release notes](https://github.com/docker-client/docker-registry/releases)
- [Changelog](https://github.com/docker-client/docker-registry/blob/main/RELEASE.md)
- [Commits](https://github.com/docker-client/docker-registry/commits)

---
updated-dependencies:
- dependency-name: de.gesellix:docker-registry
  dependency-type: direct:production
...

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

integration-test/build.gradle.kts

@@ -78,7 +78,7 @@ dependencies {
  testImplementation("org.slf4j:slf4j-api:[1.7,)")
  runtimeOnly("ch.qos.logback:logback-classic:[1.2,2)!!1.2.11")
 
- testImplementation("de.gesellix:docker-registry:2022-04-10T17-15-00")
+ testImplementation("de.gesellix:docker-registry:2022-04-21T23-12-00")
  testImplementation("de.gesellix:testutil:[2020-10-03T10-08-28,)")
  testImplementation("org.spockframework:spock-core:2.1-groovy-3.0")
  testRuntimeOnly("cglib:cglib-nodep:3.3.0")