chore(3p/sources): Bump channels & overlays

* //users/tazjin/predlozhnik: bump wasm-bindgen & run `cargo update`

* //users/Profpatsch/writers:
  use proper keyword syntax to make make flake8 happy.

* //third_party/nixpkgs: pick binaryen from stable channel

Change-Id: Ia711d8c396aa09b78413d80f35eedf63fa315596
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6118
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: Profpatsch <mail@profpatsch.de>

users/Profpatsch/writers/tests/default.nix

@@ -45,7 +45,7 @@ let
     } ''
     import test_lib
 
-    assert(test_lib.test() == "test 1 2 3")
+    assert test_lib.test() == "test 1 2 3"
   '');
 
 in