do not cancel CIs

Author: extrawurst

.github/workflows/rust.yml

@@ -4,12 +4,7 @@ on:
   merge_group:
   pull_request:
   push:
-    branches: [ "main" ]
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  # Cancels in progress workflows on PRs.
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+    branches: ["main"]
 
 env:
   CARGO_TERM_COLOR: always