Update actions/download-artifact action to v3

Author: renovate-bot

.github/workflows/build.yml

@@ -71,7 +71,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: "Download Artefact"
-        uses: actions/download-artifact@v2.1.0
+        uses: actions/download-artifact@v3.0.0
         with:
           name: "windows-latest"
       - name: "Dotnet NuGet Add Source"
@@ -91,7 +91,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: "Download Artefact"
-        uses: actions/download-artifact@v2.1.0
+        uses: actions/download-artifact@v3.0.0
         with:
           name: "windows-latest"
       - name: "Dotnet NuGet Push"