FIX: Test Exclusions for 5.2 & update README

[bewithgaurav]

This pull request expands support for newer Django versions (5.1 and 5.2) in the MSSQL-Django backend, documents version-specific limitations, and updates the test exclusion list to reflect new incompatibilities and areas for community contribution. The README is updated to clarify the level of support and known issues for each Django version, while testapp/settings.py now programmatically excludes failing tests based on Django version.

Django version support and documentation:

• README now lists support for Django 5.1 and 5.2, with clear breakdowns of limitations for each version, especially regarding composite primary keys and SQL Server compatibility features. [1] [2]

Test suite management:

• testapp/settings.py introduces version-aware exclusions for tests that fail due to SQL Server limitations in Django 5.0, 5.1, and 5.2. This includes tuple lookups, multi-column foreign keys, JSONField operations, and composite primary key features. [1] [2]

Community contribution guidance:

• The README and test exclusions highlight which limitations are good candidates for community contributions, making it easier for new contributors to identify areas needing work. [1] [2]

[Copilot]

Pull Request Overview

This pull request adds support for Django 5.1 and 5.2 versions while documenting known limitations and updating test exclusions. The changes include comprehensive documentation of version-specific issues with SQL Server compatibility, particularly around composite primary keys, tuple lookups, and JSONField operations.

• Expanded Django version support to include 5.1 and 5.2 with documented limitations
• Added version-aware test exclusions for SQL Server-specific compatibility issues
• Enhanced README with detailed breakdown of limitations for each Django version

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
README.md	Documents Django 5.1/5.2 support and categorizes limitations by impact level
testapp/settings.py	Adds conditional test exclusions based on Django version for known SQL Server incompatibilities