build(deps): bump org.testcontainers:testcontainers-bom

Bumps [org.testcontainers:testcontainers-bom](https://github.com/testcontainers/testcontainers-java) from 1.21.1 to 1.21.3.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.21.1...1.21.3)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers-bom
  dependency-version: 1.21.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -45,7 +45,7 @@
         <log4j2-version>2.24.3</log4j2-version>
         <protobuf-version>4.31.1</protobuf-version>
         <slf4j-version>2.0.17</slf4j-version>
-        <testcontainers-version>1.21.1</testcontainers-version>
+        <testcontainers-version>1.21.3</testcontainers-version>
 
         <build-helper-maven-plugin-version>3.6.0</build-helper-maven-plugin-version>
         <central-publishing-maven-plugin-version>0.7.0</central-publishing-maven-plugin-version>