Update actions/upload-artifact action to v7

skip-release-and-release-note: true
GitOrigin-RevId: 54e2672818bd6e9c6dcc1da55c069d53d66071cb

Author: Octobob

.github/workflows/main.yaml

@@ -120,7 +120,7 @@ jobs:
           fail-on-error: true
 
       - name: Upload NuGet package artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: OctoClientsNuget
           path: ./artifacts/*.nupkg