Bump System.Collections.Immutable from 1.7.1 to 5.0.0 in /xFunc.Maths (#379)
Bump System.Collections.Immutable from 1.7.1 to 5.0.0 in /xFunc.Maths (#379)

Bumps [System.Collections.Immutable](https://github.com/dotnet/runtime) from 1.7.1 to 5.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
sys27/xFunc