Update dependency org.testcontainers:testcontainers-bom to v1.21.3

Author: xdev-renovate

demo/integration-tests/pom.xml

@@ -123,7 +123,7 @@
 			<dependency>
 				<groupId>org.testcontainers</groupId>
 				<artifactId>testcontainers-bom</artifactId>
-				<version>1.21.2</version>
+				<version>1.21.3</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>