Update dependency org.testcontainers:testcontainers-bom to v1.21.3 (#921)

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

Author: renovate[bot]

pom.xml

@@ -122,7 +122,7 @@
     <plugin-exec.version>3.5.1</plugin-exec.version>
     <slf4j.version>2.0.17</slf4j.version>
     <spotless.check.skip>false</spotless.check.skip>
-    <testcontainers.version>1.21.2</testcontainers.version>
+    <testcontainers.version>1.21.3</testcontainers.version>
   </properties>
 
   <dependencyManagement>