Bump ansys-sphinx-theme from 0.14.0 to 1.2.3

Bumps [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) from 0.14.0 to 1.2.3.
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.14.0...v1.2.3)

---
updated-dependencies:
- dependency-name: ansys-sphinx-theme
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -30,7 +30,7 @@ dependencies = [
 
 [project.optional-dependencies]
 doc = [
-    "ansys-sphinx-theme==0.14.0",
+    "ansys-sphinx-theme==1.2.3",
     "anyio==4.3.0",
     "numpy==1.26.4",
     "numpydoc==1.6.0",