Bump org.opensearch:opensearch-testcontainers from 2.1.2 to 2.1.3 (#436)

Bumps [org.opensearch:opensearch-testcontainers](https://github.com/opensearch-project/opensearch-testcontainers) from 2.1.2 to 2.1.3.
- [Release notes](https://github.com/opensearch-project/opensearch-testcontainers/releases)
- [Commits](opensearch-project/opensearch-testcontainers@v2.1.2...v2.1.3)

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

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Author: dependabot[bot]

settings.gradle.kts

@@ -39,7 +39,7 @@ dependencyResolutionManagement {
       library("client", "org.opensearch.client", "opensearch-rest-client").versionRef("opensearch")
       library("high-level-client", "org.opensearch.client", "opensearch-rest-high-level-client").versionRef("opensearch")
       library("sniffer", "org.opensearch.client", "opensearch-rest-client-sniffer").versionRef("opensearch")
-      library("testcontainers", "org.opensearch:opensearch-testcontainers:2.1.2") 
+      library("testcontainers", "org.opensearch:opensearch-testcontainers:2.1.3") 
     }
 
     create("jacksonLibs") {