Update dependencies

Use logback 1.2.11 to omit known security issues.
Use more recent stable versions of jaxb-api and picocli

Fixes #203

Author: pesse

pom.xml

@@ -43,17 +43,17 @@
       <dependency>
           <groupId>javax.xml.bind</groupId>
           <artifactId>jaxb-api</artifactId>
-          <version>2.3.0</version>
+          <version>2.3.1</version>
       </dependency>
       <dependency>
           <groupId>ch.qos.logback</groupId>
           <artifactId>logback-classic</artifactId>
-          <version>1.2.3</version>
+          <version>1.2.11</version>
       </dependency>
       <dependency>
           <groupId>info.picocli</groupId>
           <artifactId>picocli</artifactId>
-          <version>4.0.0-beta-1b</version>
+          <version>4.6.3</version>
       </dependency>
       <dependency>
           <groupId>com.oracle.ojdbc</groupId>