[FLINK-21277] Bump testcontainers version

Author: dawidwys

flink-connectors/flink-connector-elasticsearch6/pom.xml

@@ -86,7 +86,7 @@ under the License.
 		<dependency>
 			<groupId>org.testcontainers</groupId>
 			<artifactId>elasticsearch</artifactId>
-			<version>1.15.0</version>
+			<version>1.15.1</version>
 			<scope>test</scope>
 		</dependency>
 

flink-connectors/flink-connector-elasticsearch7/pom.xml

@@ -86,7 +86,7 @@ under the License.
 		<dependency>
 			<groupId>org.testcontainers</groupId>
 			<artifactId>elasticsearch</artifactId>
-			<version>1.15.0</version>
+			<version>1.15.1</version>
 			<scope>test</scope>
 		</dependency>
 

flink-end-to-end-tests/flink-end-to-end-tests-common-kafka/pom.xml

@@ -104,7 +104,7 @@ under the License.
 		<dependency>
 			<groupId>org.testcontainers</groupId>
 			<artifactId>kafka</artifactId>
-			<version>1.15.0</version>
+			<version>1.15.1</version>
 		</dependency>
 
 		<dependency>

flink-end-to-end-tests/flink-end-to-end-tests-common/pom.xml

@@ -65,7 +65,7 @@ under the License.
 		<dependency>
 			<groupId>org.testcontainers</groupId>
 			<artifactId>testcontainers</artifactId>
-			<version>1.15.0</version>
+			<version>1.15.1</version>
 		</dependency>
 		<dependency>
 			<!-- To ensure that flink-dist is built beforehand -->