Bump actions/download-artifact from 5 to 6 (#40)

Author: dependabot[bot]

.github/workflows/dotnet.yaml

@@ -103,7 +103,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download NuGet artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: nuget-package
       - name: Check NuGet contents
@@ -116,7 +116,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Download NuGet artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
       - name: Tag and release packages
         env:
           GITHUB_TOKEN: "mock-token"
@@ -150,7 +150,7 @@ jobs:
       contents: read
     steps:
       - name: Download NuGet artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: nuget-package
           path: downloaded
@@ -177,7 +177,7 @@ jobs:
         with:
           token: ${{ steps.app-token.outputs.token }}
       - name: Download NuGet artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
       - name: Tag and release packages
         env:
           GITHUB_TOKEN: ${{ steps.app-token.outputs.token }}