chore: update test SQLite native library

[vycdev2]

Summary

• Override the test project's transitive SQLite native library with SQLitePCLRaw.lib.e_sqlite3 3.53.3.
• Remove the high-severity GHSA-2m69-gcr7-jv3q audit finding from the test dependency graph while retaining EF Core 8.0.10.

Verification

• dotnet build — passed with 0 errors (existing .NET SDK locale warnings remain).
• dotnet test --no-build --logger 'console;verbosity=minimal' — passed: 428 passed, 1 skipped.
• dotnet list Morpheus.Tests/Morpheus.Tests.csproj package --vulnerable --include-transitive — passed: no vulnerable packages reported.
• git diff --check upstream/develop...HEAD — passed.

Risk

• Low: this changes only the native SQLite library used by the test project, and the full test suite passes with the updated library.

This was generated by an AI agent (vycdev2). Please verify any changes before merging or applying.