message: fix(api): Fix gen2 model offsets
  The model offsets for gen2 pipettes were incorrect, in some cases incorrect
  enough to cause head crashes during tasks like deck calibration. After
  consultation with hardware, these are the correct values.
diff: "units": "mm/s",
  "type": "float"
  },
  - "modelOffset": [0.0, 0.0, 6.05],
  + "modelOffset": [0.0, 0.0, -14.55],
  "plungerCurrent": {
  "value": 1.0,
  "min": 0.01,
  "units": "mm/s",
  "type": "float"
  },
  - "modelOffset": [0.0, 0.0, 12.95],
  + "modelOffset": [0.0, 0.0, 4.45],
  "ulPerMm": [
  {
  "aspirate": [
  "units": "mm/s",
  "type": "float"
  },
  - "modelOffset": [0.0, 0.0, 33.64],
  + "modelOffset": [0.0, 0.0, 25.14],
  "ulPerMm": [
  {
  "aspirate": [
  