Update release.yml

Author: rickbutterfield

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Cache .NET packages
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/.nuget/packages
         key: ${{ runner.os }}-dotnet-${{ hashFiles('**/*.csproj') }}