Bump nuget/helpers/lib/dotnet-core from d9ecafa to e903085

Bumps [nuget/helpers/lib/dotnet-core](https://github.com/dotnet/core) from `d9ecafa` to `e903085`.
- [Release notes](https://github.com/dotnet/core/releases)
- [Commits](dotnet/core@d9ecafa...e903085)

---
updated-dependencies:
- dependency-name: nuget/helpers/lib/dotnet-core
  dependency-version: e90308508d0a52161b512332ebe0723433e8235a
  dependency-type: direct:production
...

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Author: dependabot[bot]