Bump sphinx-automodapi from 0.17.0 to 0.20.0

Bumps [sphinx-automodapi](https://github.com/astropy/sphinx-automodapi) from 0.17.0 to 0.20.0.
- [Release notes](https://github.com/astropy/sphinx-automodapi/releases)
- [Changelog](https://github.com/astropy/sphinx-automodapi/blob/main/CHANGES.rst)
- [Commits](astropy/sphinx-automodapi@v0.17.0...v0.20.0)

---
updated-dependencies:
- dependency-name: sphinx-automodapi
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

doc/requirements.txt

@@ -10,6 +10,6 @@ qiskit==2.1.2
 qiskit-aer==0.17.1
 qiskit-ibm-runtime==0.41.1
 sphinxcontrib-bibtex==2.6.2
-sphinx-automodapi==0.17.0
+sphinx-automodapi==0.20.0
 pennylane-sphinx-theme
 git+https://github.com/PennyLaneAI/pennylane.git@master