fix: Fix PowerShell syntax error in upload script

- Remove problematic Unicode characters (checkmark symbols)
- Replace with ASCII [OK] labels
- Script now parses correctly without encoding issues

build/scripts/upload_to_packages.ps1

@@ -85,7 +85,7 @@ try {
         -InFile $ExePath `
         -ContentType "application/octet-stream"
     
-    Write-Host "✓ Executable uploaded successfully" -ForegroundColor Green
+    Write-Host "[OK] Executable uploaded successfully" -ForegroundColor Green
 }
 catch {
     Write-Host "ERROR uploading executable: $_" -ForegroundColor Red
@@ -103,12 +103,12 @@ try {
         -Body $checksum `
         -ContentType "text/plain"
     
-    Write-Host "✓ Checksum uploaded successfully" -ForegroundColor Green
+    Write-Host "[OK] Checksum uploaded successfully" -ForegroundColor Green
 }
 catch {
     Write-Host "ERROR uploading checksum: $_" -ForegroundColor Red
     exit 1
 }
 
-Write-Host "`n✓ Upload complete!" -ForegroundColor Green
+Write-Host "`n[OK] Upload complete!" -ForegroundColor Green
 Write-Host "View at: $ForgejoUrl/$Repo/packages" -ForegroundColor Cyan