chore(deps): update dependency python3-saml to v1.15.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
python3-saml	==1.12.0 -> ==1.15.0

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Release Notes

SAML-Toolkits/python3-saml

v1.15.0

Compare Source

• #​317 Handle unicode characters gracefully in python 2
• #​338 Fix WantAuthnRequestsSigned parser
• #​339 Add Poetry support
• Remove version restriction on lxml dependency
• Updated Django demo to 4.X (only py3 compatible)
• Updated Travis file. Forced lxml to be installed using no-validate_binary
• Removed references to OneLogin from documentation

v1.14.0

Compare Source

• #​297 Don't require yanked version of lxml.
• #​298 Add support for python 3.10 and cleanup the GHA.
• #​299 Remove stats from coveralls removed as they are no longer maintained.

v1.13.0

Compare Source

• #​296 Add rejectDeprecatedAlgorithm settings in order to be able reject messages signed with deprecated algorithms.
• Set sha256 and rsa-sha256 as default algorithms
• #​288 Support building a LogoutResponse with non-success status
• Added warning about Open Redirect and Reply attacks
• ##​274 Replace double-underscored names with single underscores
• Add at OneLogin_Saml2_Auth get_last_assertion_issue_instant() and get_last_response_in_response_to() methods
• Upgrade dependencies

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[nijel]

Blocked by SAML-Toolkits/python3-saml#292