Insert prints in docs. (#895)

* starting insert prints

* working exec_script

* remove prints, fix exec_examples.py

* more cleanup of examples, better model printing

* upgrade netlify runtime

* extra docs deps

* few more small tweaks

docs/examples/datetime_example.py

@@ -7,7 +7,6 @@ class Model(BaseModel):
     t: time = None
     td: timedelta = None
 
-
 m = Model(
     d=1966280412345.6789,
     dt='2032-04-23T10:20:30.400+02:30',
@@ -16,9 +15,3 @@ m = Model(
 )
 
 print(m.dict())
-#> {
-#>     'd': datetime.date(2032, 4, 22),
-#>     'dt': datetime.datetime(2032, 4, 23, 10, 20, 30, 400000, tzinfo=datetime.timezone(datetime.timedelta(seconds=9000))),
-#>     't': datetime.time(4, 8, 16),
-#>     'td': datetime.timedelta(days=3, seconds=45005)
-#> }