[FIX] auth_saml: decrypt matching_value response to compare output

[edy1192]

Decrypt matching_value response to compare output response with response.name_id.text. It shows AttributeError: 'NoneType' object has no attribute 'text'.

2023-09-17 02:02:54,015 4049 ERROR odoo
odoo.addons.auth_saml.controllers.main: SAML2: failure - 'NoneType'
object has no attribute 'text'
Traceback (most recent call last):
  File
"/home/odoo/instance/extra_addons/server-auth/auth_saml/controllers/main.py",
line 219, in signin
    .auth_saml(
  File
"/home/odoo/instance/extra_addons/server-auth/auth_saml/models/res_users.py",
line 64, in auth_saml
    validation = self._auth_saml_validate(provider, saml_response,
base_url)
  File
"/home/odoo/instance/extra_addons/server-auth/auth_saml/models/res_users.py",
line 29, in _auth_saml_validate
    return provider._validate_auth_response(token, base_url)
  File
"/home/odoo/instance/extra_addons/server-auth/auth_saml/models/auth_saml_provider.py",
line 296, in _validate_auth_response
    matching_value = response.name_id.text
AttributeError: 'NoneType' object has no attribute 'text'

Check class SecurityContext in saml2 lib

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.42%. Comparing base (dbebd70) to head (c1b593f).
⚠️ Report is 356 commits behind head on 16.0.

Additional details and impacted files

@@            Coverage Diff             @@
##             16.0       #9      +/-   ##
==========================================
+ Coverage   88.83%   92.42%   +3.58%     
==========================================
  Files         115      212      +97     
  Lines        3028     5726    +2698     
  Branches      369      416      +47     
==========================================
+ Hits         2690     5292    +2602     
- Misses        241      290      +49     
- Partials       97      144      +47     

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