chore(ci): Cancel prior CI runs

.github/workflows/spelling.yml

@@ -10,6 +10,10 @@ env:
   CARGO_TERM_COLOR: always
   CLICOLOR: 1
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
 jobs:
   spelling:
     name: Spell Check with Typos