chore(deps): update dependency caddyserver/caddy to v2.4.1 (#31)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [caddyserver/caddy](https://github.com/caddyserver/caddy) | patch | `v2.4.0` -> `v2.4.1` |

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### Release Notes

<details>
<summary>caddyserver/caddy</summary>

### [`v2.4.1`](https://github.com/caddyserver/caddy/releases/v2.4.1)

[Compare Source](https://github.com/caddyserver/caddy/compare/v2.4.0...v2.4.1)

A small patch release that contains a few noncritical but pleasant fixes (unless you're using `/id/` endpoints in the admin API; then you should definitely get this update).

#### Changelog

[`7f26a6b`](https://github.com/caddyserver/caddy/commit/7f26a6b3) admin: Reinstate internal redirect for /id/ requests
[`b82db99`](https://github.com/caddyserver/caddy/commit/b82db994) caddyfile: Add parse error on site address with trailing `{` ([#&#8203;4163](https://github.com/caddyserver/caddy/issues/4163))
[`2aefe15`](https://github.com/caddyserver/caddy/commit/2aefe156) cmd: upgrade: inherit the permissions of the original executable ([#&#8203;4160](https://github.com/caddyserver/caddy/issues/4160))
[`dbe164d`](https://github.com/caddyserver/caddy/commit/dbe164d9) httpcaddyfile: Fix automation policy consolidation again (fix [#&#8203;4161](https://github.com/caddyserver/caddy/issues/4161))
[`e3c369d`](https://github.com/caddyserver/caddy/commit/e3c369d4) logging: Implement dial timeout for net writer (fix [#&#8203;4083](https://github.com/caddyserver/caddy/issues/4083)) ([#&#8203;4172](https://github.com/caddyserver/caddy/issues/4172))
[`aef8d4d`](https://github.com/caddyserver/caddy/commit/aef8d4de) reverseproxy: Set the headers in the replacer before `handle_response` ([#&#8203;4165](https://github.com/caddyserver/caddy/issues/4165))

</details>

---

### Configuration

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---

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---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

Reviewed-on: docker/link-validator#31
Co-authored-by: Renovator Bot <renovator@rknet.org>
Co-committed-by: Renovator Bot <renovator@rknet.org>

Dockerfile

@@ -11,7 +11,7 @@ ARG BUILD_VERSION
 # renovate: datasource=npm depName=broken-link-checker
 ENV BLC_VERSION="${BUILD_VERSION:-0.7.8}"
 # renovate: datasource=github-releases depName=caddyserver/caddy
-ENV CADDY_VERSION="${CADDY_VERSION:-v2.4.0}"
+ENV CADDY_VERSION="${CADDY_VERSION:-v2.4.1}"
 
 ENV LINK_VALIDATOR_BASE_DIR=/drone/src \
     LINK_VALIDATOR_SERVER_PORT=80 \