build: specify packages lock file path

Author: Scoolnik

.github/workflows/dotnet_nightly.yml

@@ -29,6 +29,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: "6.x"
+          cache-dependency-path: src/packages.lock.json
           cache: true
 
       - run: dotnet restore --locked-mode