upgrade bcel to 6.7.0

Author: tarzanek

pom.xml

@@ -105,7 +105,7 @@ Portions Copyright (c) 2018, 2020, Chris Fraire <cfraire@me.com>.
             <dependency>
                 <groupId>org.apache.bcel</groupId>
                 <artifactId>bcel</artifactId>
-                <version>6.6.0</version>
+                <version>6.7.0</version>
             </dependency>
             <dependency>
                 <groupId>org.apache.lucene</groupId>