Only use discoveries on Wayf to prevent double entries

Bump simplesamlphp/saml2 from 4.16.14 to 4.17.0

Bumps [simplesamlphp/saml2](https://github.com/simplesamlphp/saml2) from 4.16.14 to 4.17.0.
- [Release notes](https://github.com/simplesamlphp/saml2/releases)
- [Commits](simplesamlphp/saml2@v4.16.14...v4.17.0)

---
updated-dependencies:
- dependency-name: simplesamlphp/saml2
  dependency-type: direct:production
...

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

Merge pull request #1785 from OpenConext/bugfix/fix-lockfile

Fix composer lockfile