Bump ansys-mechanical-core from 0.10.11 to 0.11.1 in /requirements

Bumps [ansys-mechanical-core](https://github.com/ansys/pymechanical) from 0.10.11 to 0.11.1.
- [Release notes](https://github.com/ansys/pymechanical/releases)
- [Changelog](https://github.com/ansys/pymechanical/blob/main/CHANGELOG.md)
- [Commits](ansys/pymechanical@v0.10.11...v0.11.1)

---
updated-dependencies:
- dependency-name: ansys-mechanical-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/requirements_doc.txt

@@ -1,5 +1,5 @@
 #PyMechanical
-ansys-mechanical-core==0.10.11
+ansys-mechanical-core==0.11.1
 
 # Documentation dependencies
 ansys-sphinx-theme==0.16.5