chore(deps): update peter-evans/create-pull-request action to v7 (#1109)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[peter-evans/create-pull-request](https://redirect.github.com/peter-evans/create-pull-request)
| action | major | `v6` -> `v7` |

---

### Release Notes

<details>
<summary>peter-evans/create-pull-request
(peter-evans/create-pull-request)</summary>

###
[`v7`](https://redirect.github.com/peter-evans/create-pull-request/compare/v6...v7)

[Compare
Source](https://redirect.github.com/peter-evans/create-pull-request/compare/v6...v7)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "every weekday" in timezone Etc/UTC,
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

---

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View the [repository job
log](https://developer.mend.io/github/ScaleLeap/selling-partner-api-sdk).

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.github/workflows/generate-models.yml

@@ -60,7 +60,7 @@ jobs:
 
       - name: Create Pull Request
         id: cpr
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           commit-message: 'chore: update api models'