build-appliance-image: Update to dunfell head revision

(From OE-Core rev: efb1a73a13907bed3acac8e06053aef3e2ef57f5)

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 setuptools3
 
-SRCREV ?= "f5e8301b203715404d18215d7d914499555b3425"
+SRCREV ?= "9fbfbf002e210dbdb2a4b9f3adf8012f245cf38f"
 SRC_URI = "git://git.yoctoproject.org/poky;branch=dunfell \
            file://Yocto_Build_Appliance.vmx \
            file://Yocto_Build_Appliance.vmxf \