fix: use correct OLS GPG key URL (lst_repo.gpg) without dearmoring

The old URL (lst_debian_repo.gpg) piped through gpg --dearmor was
producing a corrupted keyring that sqv (Debian 13's GPG verifier)
could not parse. Use lst_repo.gpg directly which is already in the
correct binary GPG format.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

wo/core/variables.py

@@ -127,7 +127,7 @@ class WOVar():
                    "{0} main".format(wo_platform_codename))
 
     wo_ols = ["openlitespeed"]
-    wo_ols_repo_key = "https://rpms.litespeedtech.com/debian/lst_debian_repo.gpg"
+    wo_ols_repo_key = "https://rpms.litespeedtech.com/debian/lst_repo.gpg"
 
     wo_php_versions = {
         'php74': '7.4',