Bump testcontainersVersion from 1.19.0 to 1.19.3

Bumps `testcontainersVersion` from 1.19.0 to 1.19.3.

Updates `org.testcontainers:junit-jupiter` from 1.19.0 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@1.19.0...1.19.3)

Updates `org.testcontainers:kafka` from 1.19.0 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@1.19.0...1.19.3)

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

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

build.gradle

@@ -135,7 +135,7 @@ ext {
     slf4jVersion = "1.7.36"
     openSearchVersion = "2.11.1"
 
-    testcontainersVersion = "1.19.0"
+    testcontainersVersion = "1.19.3"
     confluentPlatformVersion = "4.1.4"
 }