Rollback cryptography to fully working version (pre-39; 38 works) (#1254)

pyproject.toml

@@ -18,6 +18,7 @@ dependencies = [
     "aiortc>=1.3.2",
     "appdirs>=1.4",
     "av>=9.2.0",
+    "cryptography>=38,<39",
     "tyro>=0.3.31",
     "gdown>=4.6.0",
     "ninja>=1.10",