ci(actions): check weekly for still working dependencies

.github/workflows/rust.yml

@@ -3,6 +3,9 @@ name: Test and Build Rust
 on:
   push:
   pull_request:
+  schedule:
+    # Check if it works with current dependencies (weekly on Wednesday 2:32 UTC)
+    - cron: '32 2 * * 3'
 
 jobs:
   test: