feat: ✨ Introduce `min_rel` for confidence integrals (#1142)
* feat: :sparkles: Refactor confidence interval calculation and transform nested types
* chore: :recycle: Update type hints and function signature
Update data conversion method to return a MutableMapping[str, Any]
Update function name in notebook.py
* chore: :page_facing_up: Update vendor URL in Dockerfile
* chore: :arrow_up: Update submodules in vendor directory
* feat: :sparkles: Add conda environment setup scripts for fish and zsh shells
* test: :white_check_mark: Add min_rel_change parameter to `args_1()` function
* test: :white_check_mark: Add "min_rel_change": 10e-6 for testing
* fix: :test_tube: Use `pytest` marker for testing `ConfidenceInterval`
