Bump actions/download-artifact from 2 to 3

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/10-dotnet.yml

@@ -69,7 +69,7 @@ jobs:
     steps:
       # Checkout code
     - name: Download IaC
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: iac
         path: iac
@@ -93,7 +93,7 @@ jobs:
         failOnStdErr: false
     
     - name: Download App
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: webapp  
         path: webapp