Bump testcontainersVersion from 1.19.8 to 1.20.0

Bumps `testcontainersVersion` from 1.19.8 to 1.20.0.

Updates `org.testcontainers:junit-jupiter` from 1.19.8 to 1.20.0
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...1.20.0)

Updates `org.testcontainers:selenium` from 1.19.8 to 1.20.0
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...1.20.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -4,7 +4,7 @@ defaultTasks 'clean', 'test'
 
 ext {
   selenideVersion = '7.3.3'
-  testcontainersVersion = '1.19.8'
+  testcontainersVersion = '1.20.0'
   junitVersion = '5.10.3'
 }