update website

.github/workflows/trigger-pages.yml

@@ -0,0 +1,20 @@
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  rebuild-pages:
+    if: github.repository == 'irssi/irssi'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.PAT_TOKEN }}
+          script: |
+            await github.rest.actions.createWorkflowDispatch({
+              owner: context.repo.owner,
+              repo: 'irssi.github.io',
+              workflow_id: 'pages.yml',
+              ref: 'main'
+            })