Revert "Update dill requirement in /sdks/python (#36147)" (#36270)

This reverts commit d35bc38.

Author: claudevdm

sdks/python/container/base_image_requirements_manual.txt

@@ -42,4 +42,4 @@ scikit-learn
 build>=1.0,<2 # tool to build sdist from setup.py in stager.
 # Dill 0.3.1.1 is included as a base manual requirement so is avaiable to users
 # with pickle_library=dill, but apache-beam does not have a hard dependency.
-dill>=0.3.1.1,<0.4.1
+dill>=0.3.1.1,<0.3.2