Bump de.gesellix:docker-registry

Bumps [de.gesellix:docker-registry](https://github.com/docker-client/docker-registry) from 2.0.0-202606131232 to 2.0.3-202606132347.
- [Release notes](https://github.com/docker-client/docker-registry/releases)
- [Changelog](https://github.com/docker-client/docker-registry/blob/main/RELEASE.md)
- [Commits](docker-client/docker-registry@v2.0.0-202606131232...v2.0.3-202606132347)

---
updated-dependencies:
- dependency-name: de.gesellix:docker-registry
  dependency-version: 2.0.3-202606132347
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

integration-test/build.gradle.kts

@@ -71,7 +71,7 @@ dependencies {
   testImplementation("org.slf4j:slf4j-api:[1.7,)")
   runtimeOnly("ch.qos.logback:logback-classic:${libs.versions.logbackVersionrange.get()}!!${libs.versions.logback.get()}")
 
-  testImplementation("de.gesellix:docker-registry:2.0.0-202606131232")
+  testImplementation("de.gesellix:docker-registry:2.0.3-202606132347")
   testImplementation("de.gesellix:testutil:[2.0.0-202606131033,)")
   testImplementation("org.spockframework:spock-core:2.4-groovy-4.0")
   testRuntimeOnly("org.junit.platform:junit-platform-launcher:6.1.0")