Update anishathalye/proof-html action to v1.4.2 (#13)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[anishathalye/proof-html](https://redirect.github.com/anishathalye/proof-html)
| action | minor | `v1.1.0` -> `v1.4.2` |

---

### Release Notes

<details>
<summary>anishathalye/proof-html (anishathalye/proof-html)</summary>

###
[`v1.4.2`](https://redirect.github.com/anishathalye/proof-html/compare/v1.4.1...v1.4.2)

[Compare
Source](https://redirect.github.com/anishathalye/proof-html/compare/v1.4.1...v1.4.2)

###
[`v1.4.1`](https://redirect.github.com/anishathalye/proof-html/compare/v1.4.0...v1.4.1)

[Compare
Source](https://redirect.github.com/anishathalye/proof-html/compare/v1.4.0...v1.4.1)

###
[`v1.4.0`](https://redirect.github.com/anishathalye/proof-html/compare/v1.3.0...v1.4.0)

[Compare
Source](https://redirect.github.com/anishathalye/proof-html/compare/v1.3.0...v1.4.0)

###
[`v1.3.0`](https://redirect.github.com/anishathalye/proof-html/compare/v1.2.0...v1.3.0)

[Compare
Source](https://redirect.github.com/anishathalye/proof-html/compare/v1.2.0...v1.3.0)

###
[`v1.2.0`](https://redirect.github.com/anishathalye/proof-html/releases/tag/v1.2.0)

[Compare
Source](https://redirect.github.com/anishathalye/proof-html/compare/v1.1.0...v1.2.0)

proof-html 1.2.0

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/Pearl1981/demo-repository).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC4xMzUuMiIsInVwZGF0ZWRJblZlciI6IjM5LjE5LjAiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbXX0=-->

.github/workflows/proof-html.yml

@@ -6,6 +6,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: anishathalye/proof-html@v1.1.0
+      - uses: anishathalye/proof-html@v1.4.2
         with:
           directory: ./