Update dependency com.onelogin:java-saml to v2.6.0

[mend-for-github-com]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.onelogin:java-saml	2.5.0 -> 2.6.0

By merging this PR, the issue #17 will be automatically resolved and closed:

Severity	CVSS Score	CVE
High	9.1	WS-2018-0629
High	7.5	CVE-2021-40690

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Release Notes

onelogin/java-saml

v2.6.0

Compare Source

• Check that the certificate of the XML matches the value registered (cert/fingerprint) before validating signature to be able identify such issue.
• 218 Exposing statuscode and substatuscode through toolkit.
• 233 When checking IdP Settings, verify with multiple possible IdP certs.
• 240 Support KeyStore file for SP. Also 243
• 244 Add StatusCode support for logout response
• 232 Make Fingerprint check case insensitive
• Allow duplicated names in AttributeStatement by configuration.
  -253 Expose validation exception in Saml classes
• Support NameID Encryptation with MultiCert
• 276 Fix signature validation issue when using fingerprint and sha256 alg
• 272 Fix format time issues
• 284 fix nameidNameQualifier typo on logout example
• 283 Expose a constructor for SamlResponse class which doesn't require HttpRequest
• 250 Add a stay parameter to Auth processSlo
• Make ProtocolBinding in the AuthnRequest configurable
• Metadata constructor now will not set a validUntilTime/cacheDuration if a null parameter is added, if no param provided, it will take constant values.
• Update dependencies
• Update the .java-version file to 1.8

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