Update adal4j to latest 1.6.7 (#706)

Fixes Azure/azure-sdk-for-java#23225

Author: jianghaolu

pom.xml

@@ -106,7 +106,7 @@
       <dependency>
         <groupId>com.microsoft.azure</groupId>
         <artifactId>adal4j</artifactId>
-        <version>1.6.4</version>
+        <version>1.6.7</version>
       </dependency>
       <dependency>
         <groupId>io.reactivex</groupId>