Update SM1 slit home position after repair work

SM1 hexapod was repaired and after it the home position was measured.
The new position (TBC) is

home: [ -0.2503, 0.097, 205.146025, 0.0, 0.059076, -120 ]

Update enu.yaml accordingly. Note that this time the home position was measured in different way from that used during integration at LAM — using the camera detectors as a reference.