chore: update Cinema 4D OpenJD recipe to 0.12.1

[karthikbekalp]

Summary

• update the Cinema 4D OpenJD adaptor recipe from 0.11.4 to 0.12.1
• use the official PyPI source archive SHA256
• align the Deadline runtime constraint with the upstream release metadata

Verification

• python3 scripts/validate_repository.py
• built and tested the package for linux-64 and win-64 using the Deadline Cloud package build workflow
• completed a one-frame Cinema 4D 2026.3.3 smoke render with cinema4d-openjd=0.12.1

[github-actions]

The new floor deadline >=0.60.1 cannot be satisfied by this repo's own deadline sample recipe, which is still pinned at 0.54.3 (see conda_recipes/deadline/recipe/recipe.yaml line 5). Anyone who builds the sample recipes into a single conda channel and then builds or installs cinema4d-openjd 0.12.1 will hit an unsatisfiable run dependency. The gap existed before this change (>=0.59 vs 0.54.3) but this widens it.

Relatedly, the header comment updated on line 3 now describes the divergence backwards. It says the standalone deadline sample "may track a newer, incompatible minor release", but that sample actually tracks an older release (0.54.3), so the caveat does not warn readers about the failure mode they will actually hit.

openjd-adaptor-runtime is fine here: the sample recipe is at 0.9.3, inside >=0.7,<0.10.

Suggest either bumping conda_recipes/deadline to a 0.60.x release alongside this change, or correcting the comment to say the standalone sample may track an older, incompatible minor release.