Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to 439b06ddffcf1ad65df967ad3f663e0095cf6b33
  - Merge "Fixed major Sonar issues in JsonDelete"
  - Fixed major Sonar issues in JsonDelete

    Removed unnecessary imports.
    Changed return type from ArrayList to List.

    Change-Id: I9a17c9848b33be9f6ca5a2d51ee4b3f18abfcc38
    Issue-ID: MUSIC-338
    Signed-off-by: Robert Bogacki <r.bogacki@samsung.com>

diff --git a/docs/submodules/music.git b/docs/submodules/music.git
index bdde056..439b06d 160000 (submodule)
--- a/docs/submodules/music.git
+++ b/docs/submodules/music.git
@@ -1 +1 @@
-Subproject commit bdde056e3e994a6970ef182397812a3ddf56b70e
+Subproject commit 439b06ddffcf1ad65df967ad3f663e0095cf6b33