Error while pip install -e 'packages/markitdown[all]'

INFO: pip is looking at multiple versions of markitdown[all] to determine which version is compatible with other requirements. This could take a while.
ERROR: Ignored the following versions that require a different python version: 0.5.0 Requires-Python >=3.8,<3.12; 0.5.1 Requires-Python >=3.8,<3.13; 0.6.3 Requires-Python >=3.8,<3.14; 1.0.0 Requires-Python >=3.8,<3.14; 1.0.1 Requires-Python >=3.8,<3.14; 1.0.2 Requires-Python >=3.8,<3.14; 1.0.3 Requires-Python >=3.8,<3.14; 1.1.0 Requires-Python >=3.8,<3.14; 1.1.1 Requires-Python >=3.8,<3.14; 1.2.0 Requires-Python >=3.8,<3.14; 1.2.1 Requires-Python >=3.8,<3.14; 1.2.2 Requires-Python >=3.8,<3.14
ERROR: Could not find a version that satisfies the requirement youtube-transcript-api~=1.0.0; extra == "all" (from markitdown[all]) (from versions: 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.2.0, 0.2.1, 0.3.0, 0.3.1, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.5.0, 0.6.0, 0.6.1, 0.6.2, 1.2.3, 1.2.4)
ERROR: No matching distribution found for youtube-transcript-api~=1.0.0; extra == "all"

My Python Version is Python 3.14.6 so according to README.md it should be OK.
Regards

Start with README.md and reproduce pip install -e 'packages/markitdown[all]' using Python 3.14.6. Check whether the all extra can resolve its listed dependencies on that Python version, and consider the issue complete when the documented installation works or the supported-version guidance accurately reflects the result.