Remove branch restrictions for CI workflow

Removed main branch restriction for push and pull request events.

Author: orxfun

.github/workflows/ci.yml

@@ -2,9 +2,7 @@ name: Rust
 
 on:
   push:
-    branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
 
 env:
   CARGO_TERM_COLOR: always