build(deps): Bump org.testcontainers:testcontainers

Bumps [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java) from 1.20.3 to 1.20.4.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.3...1.20.4)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle.kts

@@ -40,7 +40,7 @@ val shadowDependencies: Configuration by configurations.creating
 configurations["implementation"].extendsFrom(shadowDependencies)
 
 dependencies {
-    api("org.testcontainers:testcontainers:1.20.3")
+    api("org.testcontainers:testcontainers:1.20.4")
     api("com.microsoft.playwright:playwright:1.48.0")
     api("org.jetbrains.kotlin:kotlin-stdlib:1.7.22")