Update JetBrains.gitignore

ignore dbnavigator.xml

because it contains sensitive data, such as host, port, db, user name, and so on.

Global/JetBrains.gitignore

@@ -14,6 +14,7 @@
 .idea/**/sqlDataSources.xml
 .idea/**/dynamic.xml
 .idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
 
 # Gradle
 .idea/**/gradle.xml