fix(deps): update all patch dependencies to v1.21.3

Author: renovate[bot]

gradle/libs.versions.toml

@@ -55,7 +55,7 @@ spotBugs = "4.9.4"
 swagger-annotations = "2.2.39"
 swagger-jaxrs = "1.6.16"
 systemstubs = "2.1.8"
-testcontainers = "1.21.0"
+testcontainers = "1.21.3"
 unboundid-ldap-sdk = "7.0.3"
 victools = "4.38.0"
 wiremock = "3.0.1"