Nightly docs-build is broken

[jameslamb]

Description

The nightly docs-build job her is failing, like this:

LibMambaUnsatisfiableError: Encountered problems while solving:
  - nothing provides _python_rc needed by python-3.12.0rc3-rc3_hab00c5b_1_cpython

Could not solve for environment specs
The following packages are incompatible
├─ cpuonly is requested and can be installed;
├─ python 3.12**  is installable with the potential options
│  ├─ python [3.12.0|3.12.1|...|3.12.5] would require
│  │  └─ python_abi 3.12.* *_cp312, which can be installed;
│  └─ python 3.12.0rc3 would require
│     └─ _python_rc, which does not exist (perhaps a missing channel);
└─ pytorch 2.0.0**  is not installable because there are no viable options
   ├─ pytorch 2.0.0 would require
   │  └─ python_abi 3.8.* *_cp38, which conflicts with any installable versions previously reported;
   ├─ pytorch 2.0.0 would require
   │  └─ python >=3.10,<3.11.0a0 , which conflicts with any installable versions previously reported;
   ├─ pytorch 2.0.0 would require
   │  └─ cpuonly <0 , which conflicts with any installable versions previously reported;
   ├─ pytorch 2.0.0 would require
   │  └─ python >=3.8,<3.9.0a0 , which conflicts with any installable versions previously reported;
   ├─ pytorch 2.0.0 would require
   │  └─ python >=3.9,<3.10.0a0 , which conflicts with any installable versions previously reported;
   ├─ pytorch 2.0.0 would require
   │  └─ python_abi 3.10.* *_cp310, which conflicts with any installable versions previously reported;
   ├─ pytorch 2.0.0 would require
   │  └─ python_abi 3.11.* *_cp311, which conflicts with any installable versions previously reported;
   └─ pytorch 2.0.0 would require
      └─ python_abi 3.9.* *_cp39, which conflicts with any installable versions previously reported.

(build link)

Likely a result of the recent addition of Python 3.12 here:

• Add support for Python 3.12 #214
• Add Python 3.12. shared-workflows#213