chore(deps): update amannn/action-semantic-pull-request action to v6 (#906)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[amannn/action-semantic-pull-request](https://redirect.github.com/amannn/action-semantic-pull-request)
| action | major | `v5` -> `v6` |

---

### Release Notes

<details>
<summary>amannn/action-semantic-pull-request
(amannn/action-semantic-pull-request)</summary>

###
[`v6`](https://redirect.github.com/amannn/action-semantic-pull-request/compare/v5...v6)

[Compare
Source](https://redirect.github.com/amannn/action-semantic-pull-request/compare/v5...v6)

</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 is behind base branch, 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/launchdarkly/js-core).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS42Ni4yIiwidXBkYXRlZEluVmVyIjoiNDEuMTczLjEiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbXX0=-->

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Update PR title lint workflow to use
amannn/action-semantic-pull-request v6 pinned to a specific commit.
> 
> - **CI / GitHub Actions**:
> - Update `/.github/workflows/lint-pr-title.yml` to use
`amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50`
(v6) instead of v5.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
7e1c6ad. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/lint-pr-title.yml

@@ -12,6 +12,6 @@ jobs:
     name: Verify the PR title matches conventional commit spec.
     runs-on: ubuntu-latest
     steps:
-      - uses: amannn/action-semantic-pull-request@v5
+      - uses: amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50 # v6
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}