Bump NathanVaughn/actions-cloudflare-purge from 3.0.0 to 4.0.0

Bumps [NathanVaughn/actions-cloudflare-purge](https://github.com/nathanvaughn/actions-cloudflare-purge) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/nathanvaughn/actions-cloudflare-purge/releases)
- [Commits](NathanVaughn/actions-cloudflare-purge@v3.0.0...v4.0.0)

---
updated-dependencies:
- dependency-name: NathanVaughn/actions-cloudflare-purge
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/cd.yml

@@ -44,7 +44,7 @@ jobs:
         with:
           args: "deploy --local-only -i app:latest"
       - name: Cloudflare Cache Purge Action
-        uses: NathanVaughn/actions-cloudflare-purge@v3.0.0
+        uses: NathanVaughn/actions-cloudflare-purge@v4.0.0
         if: success()
         with:
           cf_zone: ${{ secrets.CLOUDFLARE_ZONE }}