Proper setup of PyTorch versions in Conda based environments

[bhagemeier]

Due Diligence

• General:
  • [x] title of the PR is suitable to appear in the Release Notes
• Implementation:
  • [ ] unit tests: all split configurations tested
  • [ ] unit tests: multiple dtypes tested
  • [ ] documentation updated where needed

Description

Issue/s resolved: #1491

Changes proposed:

• Restrict PyTorch versions to appropriate version range in Conda based environment.

Type of change

• bug fix

Memory requirements

Performance

Does this change modify the behaviour of other functions? If so, which?

no