chore: limit concurrency for build jobs (#4929)

* Configure build jobs to cancel previous builds when new changes
  are pushed to a pull request branch, and serialize builds when
  running in a branch from a push event
* Reduce privileges of GitHub token for scripts workflow

Author: Jonathan Yu

.github/workflows/ci.yaml

@@ -8,6 +8,13 @@ on:
     branches:
       - main
 
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 # Note: if: success() is used in several jobs -
 # this ensures that it only executes if all previous jobs succeeded.
 

.github/workflows/codeql-analysis.yml

@@ -10,6 +10,13 @@ on:
     # Runs every Monday morning PST
     - cron: "17 15 * * 1"
 
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   analyze:
     name: Analyze

.github/workflows/docker.yaml

@@ -9,6 +9,13 @@ on:
     types:
       - released
 
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   docker-images:
     runs-on: ubuntu-20.04

.github/workflows/docs-preview.yaml

@@ -17,6 +17,13 @@ permissions:
   security-events: none
   statuses: none
 
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   preview:
     name: Docs preview

.github/workflows/installer.yml

@@ -12,6 +12,13 @@ on:
     paths:
       - "install.sh"
 
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   ubuntu:
     name: Test installer on Ubuntu

.github/workflows/npm-brew.yaml

@@ -8,6 +8,13 @@ on:
   release:
     types: [released]
 
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   # NOTE: this job requires curl, jq and yarn
   # All of them are included in ubuntu-latest.

.github/workflows/scripts.yml

@@ -14,6 +14,25 @@ on:
       - "**.sh"
       - "**.bats"
 
+permissions:
+  actions: none
+  checks: none
+  contents: read
+  deployments: none
+  issues: none
+  packages: none
+  pull-requests: none
+  repository-projects: none
+  security-events: none
+  statuses: none
+
+# Cancel in-progress runs for pull requests when developers push
+# additional changes, and serialize builds in branches.
+# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   test:
     name: Run script unit tests