Bump the development-dependencies group with 2 updates (#8964)

Bumps the development-dependencies group with 2 updates: [org.testcontainers:testcontainers-bom](https://github.com/testcontainers/testcontainers-java) and [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc).


Updates `org.testcontainers:testcontainers-bom` from 1.19.5 to 1.19.6
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testcontainers/testcontainers-java/compare/1.19.5...1.19.6)

Updates `org.postgresql:postgresql` from 42.6.0 to 42.6.1
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/compare/REL42.6.0...REL42.6.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -98,7 +98,7 @@ ext {
     mysqlVersion = '8.0.33'
     oracleVersion = '23.3.0.23.09'
     pahoMqttClientVersion = '1.2.5'
-    postgresVersion = '42.6.0'
+    postgresVersion = '42.6.1'
     protobufVersion = '3.25.3'
     r2dbch2Version = '1.0.0.RELEASE'
     reactorVersion = '2023.0.3'
@@ -115,7 +115,7 @@ ext {
     springSecurityVersion = '6.2.2'
     springVersion = '6.1.4'
     springWsVersion = '4.0.10'
-    testcontainersVersion = '1.19.5'
+    testcontainersVersion = '1.19.6'
     tomcatVersion = '10.1.19'
     xmlUnitVersion = '2.9.1'
     xstreamVersion = '1.4.20'