[hotfix][Connectors/AWS] Bump default Flink version to minimum support version, 1.19.0

Author: hlteoh37

pom.xml

@@ -56,7 +56,7 @@ under the License.
         <aws.sdkv1.version>1.12.439</aws.sdkv1.version>
         <aws.sdkv2.version>2.26.19</aws.sdkv2.version>
         <netty.version>4.1.86.Final</netty.version>
-        <flink.version>1.18.0</flink.version>
+        <flink.version>1.19.0</flink.version>
         <jackson-bom.version>2.14.3</jackson-bom.version>
         <glue.schema.registry.version>1.1.18</glue.schema.registry.version>
         <guava.version>32.1.3-jre</guava.version>