Update dependency PCSC to v7

This MR contains the following updates:

Package	Type	Update	Change
PCSC	nuget	major	6.2.0 -> 7.0.0

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Release Notes

danm-de/pcsc-sharp (PCSC)

v7.0.0

2024-08-23 Daniel Mueller daniel@danm.de

• Changed target frameworks to: netstandard2.0, netstandard2.1 and net8.0.
• Refactor build process (use Directory.Build.props).
• Updated NuGet dependencies.
• Breaking change in IsoReader: Set DefaultMaxReceiveSize to 255 by Ben Schoenfeld.
• IsoReader.MaxReceiveSize changed property setter from protected to public.

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