4a-mixer: bump to laster version

4a-mixer: bump to laster version

This introduces the changes:
* d32d36b Reworked the way qml create sliders
* f8da591 Fix indent using tab instead of spaces
* 1b8ad36 Handle the volume_changed event
* 09f1cb7 Fix json format changed since v3
* 1406acd Modify graphic role
*   dc32441 Merge "delete application_name check in tap_shortcut event"
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| * f2d1e14 delete application_name check in tap_shortcut event
* 23736fb Migrate app-templates to CMake module

Change-Id: I4238178d06cf7657d8bdfabd5cad56e4fd8082ce
Signed-off-by: Stephane Desneux <stephane.desneux@iot.bzh>