build(deps): bump testcontainer.version from 1.18.0 to 1.18.3

Bumps `testcontainer.version` from 1.18.0 to 1.18.3.

Updates `testcontainers` 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 `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)

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

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

pom.xml

@@ -93,7 +93,7 @@
         <io.confluent.version>7.3.2</io.confluent.version>
         <org.apache.kafka.version>3.4.0</org.apache.kafka.version>
         <junit.version>5.9.3</junit.version>
-        <testcontainer.version>1.18.0</testcontainer.version>
+        <testcontainer.version>1.18.3</testcontainer.version>
         <kafka.connect.maven.plugin.version>0.12.0</kafka.connect.maven.plugin.version>
         <checkstyle.config.location>${basedir}</checkstyle.config.location>
         <com.fasterxml.jackson.databind.version>2.15.2</com.fasterxml.jackson.databind.version>