Bump org.testcontainers:testcontainers-bom

Bumps the maven-dependencies group with 1 update: [org.testcontainers:testcontainers-bom](https://github.com/testcontainers/testcontainers-java).


Updates `org.testcontainers:testcontainers-bom` from 1.20.5 to 1.20.6
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.5...1.20.6)

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

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

Author: dependabot[bot]

springcloud-spring-boot-3-integrationtests/pom.xml

@@ -41,7 +41,7 @@
         <axon.version>4.10.0</axon.version>
         <spring-cloud.version>2023.0.3</spring-cloud.version>
         <spring-cloud-consul.version>4.2.0</spring-cloud-consul.version>
-        <testcoontainers.version>1.20.5</testcoontainers.version>
+        <testcoontainers.version>1.20.6</testcoontainers.version>
 
         <jar-plugin.version>3.4.2</jar-plugin.version>
         <jacoco-plugin.version>0.8.11</jacoco-plugin.version>