chore(dependencies): pin pandas<3 (#2699)

Until we can make sure we've accommodated the changes. The pyproject.toml already has an upper bound

Author: wpbonelli

etc/environment.yml

@@ -9,7 +9,7 @@ dependencies:
   - python>=3.10
   - numpy>=1.20.3
   - matplotlib>=1.4.0
-  - pandas>=2.0.0
+  - pandas>=2.0.0,<3
 
   # codegen
   - boltons>=1.0