fix(deps): update dependency org.testcontainers:testcontainers-bom to v1.21.4 (#549)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -43,7 +43,7 @@
       <dependency>
         <groupId>org.testcontainers</groupId>
         <artifactId>testcontainers-bom</artifactId>
-        <version>1.21.3</version>
+        <version>1.21.4</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>