SLING-9773 update to bnd-index-m-p 5.2.0 which restores compatibility
with Maven 3.1+
diff --git a/pom.xml b/pom.xml
index 83b4b40..d5a8ca0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -166,7 +166,7 @@
             <plugin>
                 <groupId>biz.aQute.bnd</groupId>
                 <artifactId>bnd-indexer-maven-plugin</artifactId>
-                <version>5.1.2</version>
+                <version>5.2.0</version>
                 <executions>
                     <execution>
                         <id>index</id>