Branding updates for 4.0.0 (#2395)

Bump SkiaSharp.NativeAssets.Linux in /src/devices/Ssd13xx/samples (#2163

)

Bumps [SkiaSharp.NativeAssets.Linux](https://github.com/mono/SkiaSharp) from 2.88.3 to 2.88.6.
- [Release notes](https://github.com/mono/SkiaSharp/releases)
- [Commits](mono/SkiaSharp@v2.88.3...v2.88.6)

---
updated-dependencies:
- dependency-name: SkiaSharp.NativeAssets.Linux
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Branding changes in preparation of 3.0 (#2100)

The call to Dns.GetHostEntry() may fail on MacOS (#1927)

* The call to Dns.GetHostEntry() may fail on MacOS

... only ever seen there.

* Build on one CPU only

Maybe this avoids the concurrency problems?

* Revert "Build on one CPU only"

This reverts commit 7ee8124.

* Make sure there's only one .csproj per directory

Therefore split up sample folders containing multiple
projects into subfolders. This fixes the macOS build and
also some weird issues on other operating systems (such
as the debugger getting confused about which one to execute)

* Also update the solution files

Added support for new Raspberry Pi 4 board revision b03115 (#1808)

Co-authored-by: Christian Mönius <christian.moenius@proleit.com>

[main] Update dependencies from dotnet/arcade (#1768)

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

1.5 Release

Update dependencies from https://github.com/dotnet/arcade build 20210…

…315.1 (#1484)

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.GenAPI , Microsoft.DotNet.Helix.Sdk
 From Version 6.0.0-beta.21160.7 -> To Version 6.0.0-beta.21165.1

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

Regenerate device listing (#1377)

Update dependencies from https://github.com/dotnet/arcade build 20201…

…123.2 (#1309)

Microsoft.DotNet.GenAPI , Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.Helix.Sdk
 From Version 6.0.0-beta.20567.7 -> To Version 6.0.0-beta.20573.2

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>