Update dependency org.testcontainers:testcontainers to v2

Author: renovate[bot]

pom.xml

@@ -19,7 +19,7 @@
         <sonar.projectKey>piomin_sample-spring-blockchain</sonar.projectKey>
         <sonar.organization>piomin</sonar.organization>
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
-        <testcontainers.version>1.21.3</testcontainers.version>
+        <testcontainers.version>2.0.0</testcontainers.version>
         <web3j.version>5.0.0</web3j.version>
     </properties>