fix: do not update package status if it is unchanged

In order to prevent timestamp bumps, filter by status is added

src/ahriman/core/database/operations/package_operations.py

@@ -292,6 +292,7 @@ class PackageOperations(Operations):
                 (:package_base, :status, :last_updated, :repository)
                 on conflict (package_base, repository) do update set
                 status = :status, last_updated = :last_updated
+                where status != :status
                 """,
                 {
                     "package_base": package_base,