Bump actions/download-artifact from 3 to 4 (#52)

* Bump actions/download-artifact from 3 to 4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

* Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Smaug123 <[email protected]>

.github/workflows/dotnet.yaml

@@ -99,7 +99,7 @@ jobs:
       - name: Pack
         run: dotnet pack ApiSurface/ApiSurface.fsproj --configuration Release
       - name: Upload NuGet artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: nuget-package
           path: ApiSurface/bin/Release/ApiSurface.*.nupkg
@@ -109,7 +109,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download NuGet artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: nuget-package
       - name: Check NuGet contents
@@ -136,7 +136,7 @@ jobs:
     environment: release
     steps:
       - name: Download NuGet artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: nuget-package
       - name: Publish to NuGet