Bump testcontainers from 1.19.7 to 1.19.8

Bumps `testcontainers` from 1.19.7 to 1.19.8.

Updates `org.testcontainers:junit-jupiter` from 1.19.7 to 1.19.8
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.7...1.19.8)

Updates `org.testcontainers:kafka` from 1.19.7 to 1.19.8
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.7...1.19.8)

Updates `org.testcontainers:postgresql` from 1.19.7 to 1.19.8
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.7...1.19.8)

Updates `org.testcontainers:mongodb` from 1.19.7 to 1.19.8
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.7...1.19.8)

Updates `org.testcontainers:testcontainers` from 1.19.7 to 1.19.8
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.7...1.19.8)

---
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
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.testcontainers:mongodb
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.testcontainers:testcontainers
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -68,7 +68,7 @@ slf4j = "1.7.36"
 spectator-atlas = "1.3.10"
 spring = "5.3.34"
 spring-javaformat = "0.0.41"
-testcontainers = "1.19.7"
+testcontainers = "1.19.8"
 tomcat = "8.5.100"
 wavefront = "3.0.4"
 # pinned to avoid issues with shaded slf4j version - see gh-3414