ci: kas can run from the root dir

Signed-off-by: Jose Quaresma <[email protected]>

.github/workflows/build-yocto.yml

@@ -81,6 +81,4 @@ jobs:
           export SSTATE_DIR=${PERSISTENT_DIR}/sstate-cache
           mkdir -p $DL_DIR
           mkdir -p $SSTATE_DIR
-          mkdir build
-          cd build
-          kas build ../ci/${{ matrix.machine }}.yml
+          kas build ci/${{ matrix.machine }}.yml