ci(build): add concurrency to prevent duplicate runs

Author: CoderDeltaLAN

.github/workflows/build.yml

@@ -10,6 +10,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: build (${{ matrix.python-version }})