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>

install

@@ -277,7 +277,7 @@ wo_download_gpg_keys() {
     curl -o /etc/apt/keyrings/mariadb-keyring.pgp 'https://mariadb.org/mariadb_release_signing_key.pgp'
 
     # openlitespeed
-    curl -fsSL https://rpms.litespeedtech.com/debian/lst_debian_repo.gpg | gpg --dearmor | tee /usr/share/keyrings/openlitespeed-archive-keyring.gpg >/dev/null 2>&1
+    curl -fsSL -o /usr/share/keyrings/openlitespeed-archive-keyring.gpg https://rpms.litespeedtech.com/debian/lst_repo.gpg
 }
 
 wo_update_repo() {