Merge pull request #9 from biojava/dependabot/maven/log4j.version-2.13.3

Bump log4j.version from 2.5 to 2.13.3

Author: josemduarte

pom.xml

@@ -43,7 +43,7 @@
 		<project.build.targetEncoding>UTF-8</project.build.targetEncoding>
 		<scala.version>2.11</scala.version>
 		<slf4j.version>1.7.20</slf4j.version>
-		<log4j.version>2.5</log4j.version>
+		<log4j.version>2.13.3</log4j.version>
 		<biojava.version>5.0.0-alpha6</biojava.version>
 		<mmtf-spark.version>0.0.6</mmtf-spark.version>
 		<additionalparam>-Xdoclint:none</additionalparam>