Bump nuget/helpers/lib/dotnet-core from 218ef74 to 0fd814d

Bumps [nuget/helpers/lib/dotnet-core](https://github.com/dotnet/core) from `218ef74` to `0fd814d`.
- [Release notes](https://github.com/dotnet/core/releases)
- [Commits](dotnet/core@218ef74...0fd814d)

---
updated-dependencies:
- dependency-name: nuget/helpers/lib/dotnet-core
  dependency-type: direct:production
...

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