build: update presentation HTTP to 2.0.8

[PANiXiDA]

What changed

• Updated PANiXiDA.Core.Presentation.Http from 2.0.7 to 2.0.8.
• Verified that restore resolves the published 2.0.8 package.

Why

Version 2.0.8 configures strict JSON number handling in the shared HTTP presentation package. This keeps .NET 10 OpenAPI numeric schemas typed as integer or number instead of integer | string or number | string, allowing generated clients to retain scalar numeric types.

Core change: panixida-dotnet-core/presentation-http#7

How to verify

dotnet restore PANiXiDA.TacticalHeroes.slnx --force-evaluate
dotnet format PANiXiDA.TacticalHeroes.slnx --verify-no-changes --no-restore
dotnet build PANiXiDA.TacticalHeroes.slnx --configuration Release --no-restore
dotnet test PANiXiDA.TacticalHeroes.slnx --configuration Release --no-build

Result: 487 tests passed; Release build completed with 0 warnings and 0 errors.

Compatibility

• JSON request bodies must encode numeric values as JSON numbers; quoted numeric strings are no longer accepted.
• OpenAPI numeric schemas become strictly typed.
• String properties and enums serialized by string code are unaffected.
• No migrations or configuration changes are required.