[RTI-10319] Upgrade Java libraries to handle log4j vulnerability

[elbrujohalcon]

Notes

• The latest version of amazon-kinesis-client uses log4j-core-2.15.0.jar and log4j-api-2.6.2.jar
• The latest version of dynamodb-streams-kinesis-adapter ships with log4j-api-2.13.3 and log4j-core-2.13.3, but they're only used for testing as proved by its dependency tree (see below)
• I wrote log4j Upgrade awslabs/dynamodb-streams-kinesis-adapter#49, nonetheless, to ask for an update.

dynamodb-streams-kinesis-adapter dep tree

[INFO] --- maven-dependency-plugin:3.0.0:tree (default-cli) @ dynamodb-streams-kinesis-adapter ---
[INFO] com.amazonaws:dynamodb-streams-kinesis-adapter:jar:1.5.3
[INFO] +- com.amazonaws:aws-java-sdk-cloudwatch:jar:1.11.1016:compile
[INFO] |  +- com.amazonaws:aws-java-sdk-core:jar:1.11.1016:compile
[INFO] |  |  …
[INFO] |  \- com.amazonaws:jmespath-java:jar:1.11.1016:compile
[INFO] +- com.amazonaws:aws-java-sdk-dynamodb:jar:1.11.1016:compile
[INFO] |  …
[INFO] …
[INFO] \- com.amazonaws:DynamoDBLocal:jar:1.17.1:test
[INFO]    +- org.antlr:antlr4-runtime:jar:4.5:test
[INFO]    …
[INFO]    +- org.apache.logging.log4j:log4j-api:jar:2.13.3:test
[INFO]    +- org.apache.logging.log4j:log4j-core:jar:2.13.3:test
[INFO]    …
[INFO]    \- org.mockito:mockito-core:jar:1.10.19:test
[INFO]       \- org.objenesis:objenesis:jar:2.1:test