feat(ci): add concurrency control to prevent duplicate workflow runs (#452)

- Add concurrency control to build.yml that auto-cancels outdated PR runs
- Add concurrency control to build-and-publish.yml that queues deployments
- Group by PR number for builds, by ref for deployments
- Improves CI resource efficiency and reduces costs

Fixes #451

Signed-off-by: Shubh-Raj <shubhraj625@gmail.com>

Author: Shubh-Raj

.github/workflows/build-and-publish.yml

@@ -5,6 +5,10 @@ on:
     branches: 
       - master
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
 jobs:
 
   build:

.github/workflows/build.yml

@@ -6,6 +6,10 @@ on:
         branches:
             - master
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
     build:
         name: Unit Tests