Upgrade to latest nightly

ivmarkov · ivmarkov · commit 354e0b324b1e · 2022-08-05T08:59:21.000Z
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ on:
     - cron: '50 6 * * *'
 
 env:
-  rust_toolchain: nightly-2022-04-07
+  rust_toolchain: nightly
 
 jobs:
   compile:
