build-appliance-image: Update to dunfell head revision

(From OE-Core rev: d652b2aaa02a8aa9ff8f0ad84ca7762a6f950640)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/images/build-appliance-image_15.0.0.bb

@@ -24,7 +24,7 @@ IMAGE_FSTYPES = "wic.vmdk"
 
 inherit core-image module-base setuptools3
 
-SRCREV ?= "ff7dbd392aced161a79303f5312c2b356f3305dc"
+SRCREV ?= "bb24db8e6b73d094720cdc5efa48a7cc1cc31b69"
 SRC_URI = "git://git.yoctoproject.org/poky;branch=dunfell \
            file://Yocto_Build_Appliance.vmx \
            file://Yocto_Build_Appliance.vmxf \