Windows App 2.6.1: ARM64 Architecture Fix

Passbolt Windows App 2.6.1: Fix for ARM64 architecture

Passbolt Windows Application 2.6.1 restores ARM64 architecture support, which was inadvertently missing from the 2.6.0 release. The Windows application now properly supports all four CPU architectures: x64, x86, ARM, and ARM64.

Fixed

PB-47634 Update csproj to accept arm64 architecture