update docs to reflect lack of assignment validation (#1504)

changes/1504.docs.rst

@@ -0,0 +1 @@
+Remove assignment validation example from docs.

docs/roman/datamodels/metadata.rst

@@ -10,17 +10,17 @@ observation was made::
 
     print(model.meta.observation.start_time)
 
-Metadata values are automatically type-checked against the schema when
-they are set. Therefore, setting a attribute which expects a number to a
-string will raise an exception.
+Metadata values will be validated against the schema when ``validate``
+is called, when the data model is saved or when a file is read.
 
 .. code-block:: python
 
         >>> from roman_datamodels import datamodels as rdm
         >>> from roman_datamodels.maker_utils import mk_datamodel
 
         >>> model = mk_datamodel(rdm.ImageModel)
-        >>> model.meta.pointing.target_ra = "foo"  # doctest: +IGNORE_EXCEPTION_DETAIL
+        >>> model.meta.pointing.target_ra = "foo"
+        >>> model.validate()  # doctest: +IGNORE_EXCEPTION_DETAIL
         Traceback (most recent call last):
           File "<stdin>", line 1, in <module>
           File "/path/to/python/lib/python3.12/site-packages/roman_datamodels/stnode/_node.py", line 251, in __setattr__

pyproject.toml

@@ -23,10 +23,10 @@ dependencies = [
     "photutils >=1.13.0",
     "pyparsing >=2.4.7",
     "requests >=2.26",
-    "roman_datamodels>=0.22.0,<0.23.0",
-    # "roman_datamodels @ git+https://github.com/spacetelescope/roman_datamodels.git",
+    # "roman_datamodels>=0.22.0,<0.23.0",
+    "roman_datamodels @ git+https://github.com/spacetelescope/roman_datamodels.git",
     "scipy >=1.11",
-   "stcal>=1.10.0,<1.11.0",
+    "stcal>=1.10.0,<1.11.0",
     # "stcal @ git+https://github.com/spacetelescope/stcal.git@main",
     "stpipe >=0.7.0,<0.8.0",
     # "stpipe @ git+https://github.com/spacetelescope/stpipe.git@main",