CI: Updated the CI configuration to execute on pull requests opened against all branches, enabling development on feature branches.

Author: barshaul

.github/workflows/rust.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ main, 0.*.x ]
   pull_request:
-    branches: [ main, 0.*.x ]
+    branches: []
 
 env:
   CARGO_TERM_COLOR: always