feat(nuget): add support for centralized PackageVersion

[dobrou]

Changes:

Add support for centralized nuget PackageVersion property name.
New dotnet feature, described e.g. here https://stu.dev/managing-package-versions-centrally/, allows easier nuget dependencies versions management.
However this feature uses new property name in config files.

So I added parsing of new property name into nuget manager.

Context:

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please tick one)

I have verified these changes via:

• Code inspection only, or
• Newly added unit tests, or
• Unit tests + ran on a real repository

[ghost]

Hey there! 👋 This repository uses the Prettier code style.

You forgot to format these files in your pull request:

• lib/manager/nuget/extract.spec.ts
• lib/manager/nuget/extract.ts

The Prettier installation guide
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[dobrou]

I'm not sure about the Prettier comment above,
running yarn prettier --write . locally on this branch does not report any issue and does not change any file.

So I will ignore the bot comment here, unless anyone would have different opinion.

[renovate-release]

🎉 This PR is included in version 23.67.0 🎉

The release is available on:

• GitHub release
• 23.67.0

Your semantic-release bot 📦🚀