Fix build on missing version suffix

Author: bkoelman

Diff for: .github/workflows/build.yml

@@ -124,7 +124,12 @@ jobs:
     - name: Build
       shell: pwsh
       run: |
-        dotnet build --no-restore --configuration Release --version-suffix=$env:PACKAGE_VERSION_SUFFIX
+        if ($env:PACKAGE_VERSION_SUFFIX) {
+          dotnet build --no-restore --configuration Release --version-suffix=$env:PACKAGE_VERSION_SUFFIX
+        }
+        else {
+          dotnet build --no-restore --configuration Release
+        }
     - name: Test
       run: |
         dotnet test --no-build --configuration Release --collect:"XPlat Code Coverage" --logger "GitHubActions;summary.includeSkippedTests=true" -- RunConfiguration.CollectSourceInformation=true DataCollectionRunSettings.DataCollectors.DataCollector.Configuration.DeterministicReport=true
@@ -134,7 +139,12 @@ jobs:
     - name: Generate packages
       shell: pwsh
       run: |
-        dotnet pack --no-build --configuration Release --output $env:GITHUB_WORKSPACE/artifacts/packages --version-suffix=$env:PACKAGE_VERSION_SUFFIX
+        if ($env:PACKAGE_VERSION_SUFFIX) {
+          dotnet pack --no-build --configuration Release --output $env:GITHUB_WORKSPACE/artifacts/packages --version-suffix=$env:PACKAGE_VERSION_SUFFIX
+        }
+        else {
+          dotnet pack --no-build --configuration Release --output $env:GITHUB_WORKSPACE/artifacts/packages
+        }
     - name: Upload packages to artifacts
       if: matrix.os == 'ubuntu-latest'
       uses: actions/upload-artifact@v3