build(deps): bump ansys-sphinx-theme from 1.1.3 to 1.1.6 in /requirements (#522)

* build(deps): bump ansys-sphinx-theme in /requirements

Bumps [ansys-sphinx-theme](https://github.com/ansys/ansys-sphinx-theme) from 1.1.3 to 1.1.6.
- [Release notes](https://github.com/ansys/ansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v1.1.3...v1.1.6)

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

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

* Update conf.py

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Roberto Pastor Muela <37798125+RobPasMue@users.noreply.github.com>

Author: dependabot[bot]

doc/source/conf.py

@@ -200,6 +200,7 @@
     "https://github.com/ansys-internal/.*",  # Private URL
     "https://myapps.microsoft.com/signin/8f67c59b-83ac-4318-ae96-f0588382ddc0?tenantId=34c6ce67-15b8-4eff-80e9-52da8be89706",  # Join Ansys GitHub account
     "https://myapps.microsoft.com/signin/42c0fa04-03f2-4407-865e-103af6973dae?tenantId=34c6ce67-15b8-4eff-80e9-52da8be89706",  # Join Ansys internal GitHub account
+    "https://opensource.org/licenses/MIT",  # Prevented from access
 ]
 
 # Linkcheck ignore broken anchors

requirements/requirements_doc.txt

@@ -1,5 +1,5 @@
 Sphinx==8.1.3
-ansys-sphinx-theme==1.1.3
+ansys-sphinx-theme==1.1.6
 sphinx-copybutton==0.5.2
 sphinx_toolbox==3.8.1
 sphinx_design==0.6.1