SNOW-1226624 Parameter to disable SAML URL check

[sfc-gh-ext-simba-jl]

Description

issue #942

Checklist

• [X] Created tests which fail without the change (if possible)
• [X] Extended the README / documentation, if necessary

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 93.54839% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 75.42%. Comparing base (c355711) to head (e26cc2f).

Files	Patch %	Lines
dsn.go	85.71%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1128 +/- ## ========================================== + Coverage 75.40% 75.42% +0.01% ========================================== Files 53 53 Lines 11250 11266 +16 ========================================== + Hits 8483 8497 +14 - Misses 2767 2769 +2 ```

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