Remove cancel-in-progress from CI concurrency

Author: srid

.github/workflows/ci.yaml

@@ -4,7 +4,6 @@ on:
   push:
 concurrency:
   group: ci-${{ github.event_name }}-${{ github.ref }}
-  cancel-in-progress: true
 jobs:
   build:
     runs-on: ${{ matrix.os }}