Use MariaDB dynamic mirror

wo/core/apt_repo.py

@@ -30,14 +30,14 @@ class WORepo():
             try:
                 if not os.path.isfile(repo_file_path):
                     with open(repo_file_path,
-                              encoding='utf-8', mode='a') as repofile:
+                              encoding='utf-8', mode='w') as repofile:
                         repofile.write(repo_url)
                         repofile.write('\n')
                         repofile.close()
                 elif repo_url not in open(repo_file_path,
                                           encoding='utf-8').read():
                     with open(repo_file_path,
-                              encoding='utf-8', mode='a') as repofile:
+                              encoding='utf-8', mode='w') as repofile:
                         repofile.write(repo_url)
                         repofile.write('\n')
                         repofile.close()

wo/core/variables.py

@@ -188,7 +188,7 @@ class WOVar():
 
     # APT repositories
     wo_mysql_repo = ("deb [signed-by=/etc/apt/keyrings/mariadb-keyring.pgp] "
-                     "http://mariadb.mirrors.ovh.net/MariaDB/repo/"
+                     "https://deb.mariadb.org/"
                      f"{mariadb_ver}/{wo_distro} {wo_platform_codename} main")
     mariadb_repo_key = "https://mariadb.org/mariadb_release_signing_key.pgp"
     if wo_distro == 'ubuntu':