Bump org.testcontainers:mockserver in /modules/testcontainers

Bumps [org.testcontainers:mockserver](https://github.com/testcontainers/testcontainers-java) from 1.19.1 to 1.19.3.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.1...1.19.3)

---
updated-dependencies:
- dependency-name: org.testcontainers:mockserver
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

modules/testcontainers/build.gradle

@@ -25,7 +25,7 @@ dependencies {
   testImplementation 'org.eclipse.microprofile.rest.client:microprofile-rest-client-api:1.4.1'
 
   testImplementation 'org.slf4j:slf4j-log4j12:2.0.9'
-  testImplementation 'org.testcontainers:mockserver:1.19.1'
+  testImplementation 'org.testcontainers:mockserver:1.19.3'
 
   testImplementation 'org.junit.jupiter:junit-jupiter:5.10.1'
 }