Logging upgrade and fixed ES logging warning
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
- <version>2.4</version>
+ <version>2.12.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
- <version>2.4</version>
+ <version>2.12.1</version>
+ </dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-simple</artifactId>
+ <version>1.7.29</version>
</dependency>
<dependency>
<groupId>io.anserini</groupId>
