perf(ci): Switch to Release build for performance tracing

Now that tracing works with --name flag, switch from Debug to Release
build for more realistic performance profiling. Release builds have
optimizations enabled and represent actual production performance.

Author: neil-pozetroninc

.github/workflows/dotnet.yml

@@ -107,7 +107,7 @@ jobs:
       - name: Restore HelloWorldBot
         run: dotnet restore examples/HelloWorldBot/HelloWorldBot.csproj
       - name: Build HelloWorldBot
-        run: dotnet build examples/HelloWorldBot/HelloWorldBot.csproj -c Debug --no-restore
+        run: dotnet build examples/HelloWorldBot/HelloWorldBot.csproj -c Release --no-restore
       - name: Create dummy GitHub App private key
         run: |
           cat > /tmp/trace-dummy-key.pem <<'EOF'
@@ -123,7 +123,7 @@ jobs:
           TMPDIR: /tmp
           DOTNET_DiagnosticPorts: ""
         run: |
-          dotnet run --project examples/HelloWorldBot/HelloWorldBot.csproj -c Debug > /tmp/app.log 2>&1 &
+          dotnet run --project examples/HelloWorldBot/HelloWorldBot.csproj -c Release > /tmp/app.log 2>&1 &
           echo $! > app.pid
           echo "Started HelloWorldBot with PID $(cat app.pid)"
       - name: Wait for app to initialize