ci: add cleanup step to deploy action

Author: ibiixie

.github/workflows/deploy.yml

@@ -89,3 +89,16 @@ jobs:
         with:
           cf_zone: ${{ secrets.CLOUDFLARE_ZONE }}
           cf_auth: ${{ secrets.CLOUDFLARE_AUTH_KEY }}
+
+  cleanup-deployments:
+    name: Cleanup Deployment History
+    runs-on: ubuntu-latest
+    needs: ["deploy"]
+
+    steps:
+      - name: Cleanup deployments
+        uses: strumwolf/delete-deployment-environment@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          environment: production
+          onlyRemoveDeployments: true