Update testcontainer.version to v1.18.1

This MR contains the following updates:

Package	Type	Update	Change
org.testcontainers:postgresql (source)	test	patch	1.18.0 -> 1.18.1
org.testcontainers:junit-jupiter (source)	test	patch	1.18.0 -> 1.18.1

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Release Notes

testcontainers/testcontainers-java

v1.18.1

Compare Source

What's Changed

• Favor copy compose file instead of mount (#​6945) @​eddumelendez
• Allow @Container to be used as a meta-annotation (#​6914) @​eddumelendez

🚀 Features & Enhancements

• Support Kraft post Confluent Platform 7.4.0 (#​7014) @​danielpetisme
• Alternative waiting strategy for Mockserver container (#​6951) @​DenilssonMontoya
• Update RedpandaContainer.java (#​6939) @​shelajev

🐛 Bug Fixes

• Lowercase identifier in DockerComposeContainer (#​6944) @​eddumelendez
• Use the current thread's classloader for classes (#​6926) @​snowe2010

📖 Documentation

• Add new section for test integrations (#​6930) @​LeoColman

🧹 Housekeeping

• Test against Cassandra 4.x (#​7013) @​wakingrufus
• Update lombok version to 1.18.26 (#​6935) @​eddumelendez
• Fix generated pom with duplicated entries (#​6931) @​eddumelendez

📦 Dependency updates

• Bump Pulsar version to 3.0.0 (#​7016) @​nicoloboschi
• Update Gradle Wrapper to 8.1.1 (#​6933) @​github-actions
• Combined dependencies MR (#​6912) @​eddumelendez
• Combined dependencies MR (#​6908) @​eddumelendez

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