feat: lib updates and more (#1187)

This PR performs the following changes:

- update python in Dockerfile
- updates all python libraries (including Django)
- makes md5sum calculation redundant by default
- updates Postgresql used in Docker. For new installations this is ok. For existing ones this is backwards incompatible, and restore through pg_dump+pg_restore has to be performed in order to utilize Postgres 17 (since its not compatible with previous versions and will complain)
- fixes issues with HLS, and adds test to ensure they won't happen again
- allows . and @ in usernames

users/validators.py

@@ -7,7 +7,7 @@ from django.utils.translation import gettext_lazy as _
 
 @deconstructible
 class ASCIIUsernameValidator(validators.RegexValidator):
-    regex = r"^[\w]+$"
+    regex = r"^[\w.@]+$"
     message = _("Enter a valid username. This value may contain only " "English letters and numbers")
     flags = re.ASCII