Update dependency org.testcontainers:testcontainers-bom to v1.18.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.testcontainers:testcontainers-bom (source)	1.18.2 -> 1.18.3

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Release Notes

testcontainers/testcontainers-java

### [`v1.18.3`](https://togithub.com/testcontainers/testcontainers-java/releases/tag/1.18.3) [Compare Source](https://togithub.com/testcontainers/testcontainers-java/compare/1.18.2...1.18.3) Testcontainers for Java 1.18.2 introduced new strategies to detect the `docker.sock`. There was an issue reported, see [#​7082](https://togithub.com/testcontainers/testcontainers-java/issues/7082). It's is highly recommended to use version 1.18.3. ##### What's Changed - Fixes for new strategies ([#​7085](https://togithub.com/testcontainers/testcontainers-java/issues/7085)) [@​eddumelendez](https://togithub.com/eddumelendez) ##### 🧹 Housekeeping - Demote "testcontainers.properties not found" message to debug log level ([#​7035](https://togithub.com/testcontainers/testcontainers-java/issues/7035)) [@​perlun](https://togithub.com/perlun)

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