build(deps): bump testcontainersVersion from 1.18.0 to 1.18.3 (#95)

Bumps `testcontainersVersion` from 1.18.0 to 1.18.3.

Updates `org.testcontainers:junit-jupiter` from 1.18.0 to 1.18.3
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.18.0...1.18.3)

Updates `org.testcontainers:kafka` from 1.18.0 to 1.18.3
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.18.0...1.18.3)

---
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
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

build.gradle

@@ -43,7 +43,7 @@ targetCompatibility = JavaVersion.VERSION_11
 
 ext {
     kafkaVersion = "2.0.1"
-    testcontainersVersion = "1.18.0"
+    testcontainersVersion = "1.18.3"
     debeziumVersion = "1.3.0.Final"
 }