Update bnd to 6.0.0 (#11359)

For release notes, see:

https://github.com/bndtools/bnd/wiki/Changes-in-6.0.0

Related to openhab/openhab-core#2514

Signed-off-by: Wouter Born <github@maindrain.net>

pom.xml

@@ -69,7 +69,7 @@
     <maven.compiler.compilerVersion>${oh.java.version}</maven.compiler.compilerVersion>
 
     <ohc.version>3.2.0-SNAPSHOT</ohc.version>
-    <bnd.version>5.3.0</bnd.version>
+    <bnd.version>6.0.0</bnd.version>
     <commons.net.version>3.7.2</commons.net.version>
     <eea.version>2.2.1</eea.version>
     <jackson.version>2.12.3</jackson.version>