build: bump version.testcontainers from 1.21.1 to 1.21.3 (#4130)

Bumps `version.testcontainers` from 1.21.1 to 1.21.3.

Updates `org.testcontainers:testcontainers-bom` 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)

Updates `org.testcontainers:testcontainers` 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
- dependency-name: org.testcontainers:testcontainers
  dependency-version: 1.21.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -139,7 +139,7 @@
         <!-- used both for plugin & annotations dependency -->
         <version.animal-sniffer>1.17</version.animal-sniffer>
 
-        <version.testcontainers>1.21.1</version.testcontainers>
+        <version.testcontainers>1.21.3</version.testcontainers>
 
         <!-- latest version compiled for java 11 -->
         <version.jsonunit>2.38.0</version.jsonunit>