chore(deps): update actions/setup-python action to v7 (#466)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/setup-python](https://github.com/actions/setup-python) | action | major | `v6` → `v7` |

---

### Release Notes

<details>
<summary>actions/setup-python (actions/setup-python)</summary>

### [`v7.0.0`](https://github.com/actions/setup-python/releases/tag/v7.0.0)

[Compare Source](actions/setup-python@v7.0.0...v7.0.0)

#### What's Changed

##### Enhancements

- Migrate to ESM and upgrade dependencies by [@&#8203;priyagupta108](https://github.com/priyagupta108) in [#&#8203;1330](actions/setup-python#1330)
- Pin SHA commits and update docs with latest versions by [@&#8203;HarithaVattikuti](https://github.com/HarithaVattikuti) in [#&#8203;1338](actions/setup-python#1338)
- Remove the pip-install input by [@&#8203;gowridurgad](https://github.com/gowridurgad) in [#&#8203;1336](actions/setup-python#1336)

##### Bug Fix

- Fix to Classify stderr warning messages as warnings instead of errors in annotations by [@&#8203;lmvysakh](https://github.com/lmvysakh) in [#&#8203;1335](actions/setup-python#1335)
- Validate and retry manifest fetch to prevent silent failures by [@&#8203;priyagupta108](https://github.com/priyagupta108) in [#&#8203;1332](actions/setup-python#1332)

##### Dependency Upgrade

- Bump certifi from 2020.6.20 to 2024.7.4 in /**tests**/data by [@&#8203;dependabot](https://github.com/dependabot) in [#&#8203;1328](actions/setup-python#1328)
- Remove EOL Python versions and Bumps numpy text fixture by [@&#8203;priya-kinthali](https://github.com/priya-kinthali) in [#&#8203;1333](actions/setup-python#1333)
- Upgrade [@&#8203;actions/cache](https://github.com/actions/cache) to 6.2.0 by [@&#8203;philip-gai](https://github.com/philip-gai) in [#&#8203;1337](actions/setup-python#1337)

#### New Contributors

- [@&#8203;lmvysakh](https://github.com/lmvysakh) made their first contribution in [#&#8203;1335](actions/setup-python#1335)
- [@&#8203;philip-gai](https://github.com/philip-gai) made their first contribution in [#&#8203;1337](actions/setup-python#1337)

**Full Changelog**: <actions/setup-python@v6...v7.0.0>

### [`v7`](actions/setup-python@v6.3.0...v7.0.0)

[Compare Source](actions/setup-python@v6.3.0...v7.0.0)

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- 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 has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4yNzIuMCIsInVwZGF0ZWRJblZlciI6IjQzLjI3Mi4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJ0eXBlL2RlcGVuZGVuY2llcyJdfQ==-->Reviewed-on: https://git.tainton.uk/repos/pypilot/pulls/466

Co-authored-by: renovate[bot] <renovate-bot@git.tainton.uk>

Author: renovate[bot]

.gitea/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
           no-fail: true
 
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: 3.14
 

.gitea/workflows/sonar.yml

@@ -22,7 +22,7 @@ jobs:
           no-fail: true
 
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: "3.14"