Bump org.testcontainers:testcontainers from 1.19.2 to 1.19.3

Bumps [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java) from 1.19.2 to 1.19.3.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.2...1.19.3)

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

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

divviup/build.gradle.kts

@@ -41,7 +41,7 @@ dependencies {
     testImplementation(project(":divviup:commontest"))
     testImplementation("junit:junit:4.13.2")
     testImplementation("com.squareup.okhttp3:mockwebserver:4.12.0")
-    testImplementation("org.testcontainers:testcontainers:1.19.2")
+    testImplementation("org.testcontainers:testcontainers:1.19.3")
     testImplementation("com.fasterxml.jackson.core:jackson-databind:2.16.0")
     testImplementation("ch.qos.logback:logback-core:1.4.11")
     testImplementation("ch.qos.logback:logback-classic:1.4.11")