build(deps): bump testcontainers.version from 1.19.8 to 1.20.0

Bumps `testcontainers.version` from 1.19.8 to 1.20.0.

Updates `org.testcontainers:testcontainers-bom` 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:mssqlserver` 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:testcontainers-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.testcontainers:mssqlserver
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

testcontainers-spring-boot-parent/pom.xml

@@ -15,7 +15,7 @@
 
 
     <properties>
-        <testcontainers.version>1.19.8</testcontainers.version>
+        <testcontainers.version>1.20.0</testcontainers.version>
         <spring.boot.version>3.3.2</spring.boot.version>
         <spring.cloud.version>2023.0.2</spring.cloud.version>
         <spring.cloud.gcp.version>5.4.1</spring.cloud.gcp.version>