fix: do not run CI for rust code when it is not modified

.github/workflows/lockbud.yml

@@ -1,6 +1,9 @@
 name: Lockbud
 
-on: push
+on:
+  push:
+    paths-ignore:
+      - '**/*.md'
 
 jobs:
   test:

.github/workflows/rust.yml

@@ -3,6 +3,8 @@ name: Rust
 on:
   push:
     branches: [ "main", "dev" ]
+    paths-ignore:
+      - '**/*.md'
   pull_request:
     branches: [ "main" ]