envoy: switch default WASM runtime to wasmtime

wasmtime is better maintained than WAMR (although they're both under the
Bytecode Alliance umbrella), and tends to gain new features faster.

Fixes NixOS#425065... ish, although it doesn't really solve the overall
problem of needing a repin if you change which WASM runtime you want.

Author: lukegb

pkgs/by-name/en/envoy/package.nix

@@ -26,7 +26,7 @@
   git,
 
   # v8 (upstream default), wavm, wamr, wasmtime, disabled
-  wasmRuntime ? "wamr",
+  wasmRuntime ? "wasmtime",
 
   # Allows overriding the deps hash used for building - you will likely need to
   # set this if you have changed the 'wasmRuntime' setting.
@@ -50,8 +50,8 @@ let
       depsHash
     else
       {
-        x86_64-linux = "sha256-E6yUSd00ngmjaMds+9UVZLtcYhzeS8F9eSIkC1mZSps=";
-        aarch64-linux = "sha256-ivboOrV/uORKVHRL3685aopcElGvzsxgVcUmYsBwzXY=";
+        x86_64-linux = "sha256-t4Xv4UGYW5YU0kmv+1rdf2JvM1BYQyNWdtpz6Cdmxm4=";
+        aarch64-linux = "sha256-aIBnNGzc0hTdlTgRyJ7eLnWvHqZ5ywhqOM+mHfH3/18=";
       }
       .${stdenv.system} or (throw "unsupported system ${stdenv.system}");