chore: add concurrency settings to build and publish workflows

Author: kasvith

.github/workflows/build.yaml

@@ -8,6 +8,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/publish.yaml

@@ -4,6 +4,10 @@ on:
   release:
     types: [created]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-latest