Enhance Jekyll GitHub Pages workflow with concurrency

Updated the GitHub Actions workflow for Jekyll deployment to include concurrency settings and hardened runner steps.

Author: Nick2bad4u

.github/workflows/jekyll-gh-pages.yml

@@ -0,0 +1,71 @@
+# Sample workflow for building and deploying a Jekyll site to GitHub Pages
+name: Deploy Jekyll with GitHub Pages dependencies preinstalled
+
+on:
+    # Runs on pushes targeting the default branch
+    push:
+        branches: ["main"]
+    workflow_run:
+        workflows: ["GitHub Pages - Generate XML sitemap"]
+        types:
+            - completed
+
+    # Allows you to run this workflow manually from the Actions tab
+    workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+    contents: read
+    pages: write
+    id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+    group: "pages"
+    cancel-in-progress: false
+
+jobs:
+    # Build job
+    build:
+        runs-on: ubuntu-latest
+        concurrency:
+            group: jekyll-gh-pages-${{ github.ref }}
+            cancel-in-progress: false
+        steps:
+            - name: Harden the runner (Audit all outbound calls)
+              uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+              with:
+                  egress-policy: audit
+
+            - name: Checkout
+              uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+            - name: Setup Pages
+              uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
+            - name: Build with Jekyll
+              uses: actions/jekyll-build-pages@44a6e6beabd48582f863aeeb6cb2151cc1716697 # v1.0.13
+              with:
+                  source: ./
+                  destination: ./_site
+            - name: Upload artifact
+              uses: actions/upload-pages-artifact@7b1f4a764d45c48632c6b24a0339c27f5614fb0b # v4.0.0
+
+    # Deployment job
+    deploy:
+        environment:
+            name: github-pages
+            url: ${{ steps.deployment.outputs.page_url }}
+        runs-on: ubuntu-latest
+        needs: build
+        concurrency:
+            group: jekyll-gh-pages-${{ github.ref }}
+            cancel-in-progress: false
+        steps:
+            - name: Harden the runner (Audit all outbound calls)
+              uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+              with:
+                  egress-policy: audit
+
+            - name: Deploy to GitHub Pages
+              id: deployment
+              uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5