[deps] Bump djangosaml2 from 1.10.1 to 1.11.1

Bumps [djangosaml2](https://github.com/IdentityPython/djangosaml2) from 1.10.1 to 1.11.1.
- [Release notes](https://github.com/IdentityPython/djangosaml2/releases)
- [Changelog](https://github.com/IdentityPython/djangosaml2/blob/master/CHANGES)
- [Commits](IdentityPython/djangosaml2@v1.10.1...v1.11.1)

---
updated-dependencies:
- dependency-name: djangosaml2
  dependency-version: 1.11.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

setup.py

@@ -55,7 +55,7 @@
     ],
     extras_require={
         # https://github.com/IdentityPython/djangosaml2/issues/414
-        "saml": ["djangosaml2==1.10.1"],
+        "saml": ["djangosaml2==1.11.1"],
         "openvpn_status": ["openvpn-status~=0.2.1"],
     },
     classifiers=[