chore(ci): update config for Dependabot lock file handling

Author: nanotaboada

.github/workflows/dotnet.yml

@@ -26,6 +26,11 @@ jobs:
           # The action searches for packages.lock.json in the repository root,
           # calculates their hash, and uses it as a part of the cache key.
           cache: true
+          # Use cache-dependency-path for cases when multiple dependency files
+          # are used, or they are located in different subdirectories.
+          cache-dependency-path: |
+            Dotnet.Samples.AspNetCore.WebApi/packages.lock.json
+            Dotnet.Samples.AspNetCore.WebApi.Tests/packages.lock.json
 
       - name: Restore dependencies
         run: dotnet restore

Dotnet.Samples.AspNetCore.WebApi.Tests/Dotnet.Samples.AspNetCore.WebApi.Tests.csproj

@@ -6,7 +6,6 @@
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
-    <NuGetLockFilePath>../packages.lock.json</NuGetLockFilePath>
   </PropertyGroup>
 
   <ItemGroup>