Bump version.testcontainers from 1.17.6 to 1.18.0

Bumps `version.testcontainers` from 1.17.6 to 1.18.0.

Updates `db2` from 1.17.6 to 1.18.0
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testcontainers/testcontainers-java/compare/1.17.6...1.18.0)

Updates `oracle-xe` from 1.17.6 to 1.18.0
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testcontainers/testcontainers-java/compare/1.17.6...1.18.0)

Updates `postgresql` from 1.17.6 to 1.18.0
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testcontainers/testcontainers-java/compare/1.17.6...1.18.0)

---
updated-dependencies:
- dependency-name: org.testcontainers:db2
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: org.testcontainers:oracle-xe
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -88,7 +88,7 @@
     <version.jacoco>0.8.9</version.jacoco>
     <version.slf4j-test>1.2.0</version.slf4j-test>
     <version.auto-restdocs>2.0.11</version.auto-restdocs>
-    <version.testcontainers>1.17.6</version.testcontainers>
+    <version.testcontainers>1.18.0</version.testcontainers>
 
     <!-- AspectJ dependencies -->
     <version.aspectj-maven-plugin>1.14.0</version.aspectj-maven-plugin>