chore(deps): update splunk/appinspect-cli-action action to v2.8 (#1332)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[splunk/appinspect-cli-action](https://togithub.com/splunk/appinspect-cli-action)
| action | minor | `v2.7` -> `v2.8` |

---

### Release Notes

<details>
<summary>splunk/appinspect-cli-action
(splunk/appinspect-cli-action)</summary>

###
[`v2.8`](https://togithub.com/splunk/appinspect-cli-action/compare/v2.7...v2.8)

[Compare
Source](https://togithub.com/splunk/appinspect-cli-action/compare/v2.7...v2.8)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "every 2 weeks on Sunday" (UTC),
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

---

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View the [repository job
log](https://developer.mend.io/github/splunk/addonfactory-ucc-generator).

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.github/workflows/build-test-release.yml

@@ -316,7 +316,7 @@ jobs:
           poetry install
           mkdir tests/packaged
           poetry run ucc-gen package --path tests/testdata/expected_addons/expected_output_global_config_everything/Splunk_TA_UCCExample -o tests/packaged
-      - uses: splunk/appinspect-cli-action@v2.7
+      - uses: splunk/appinspect-cli-action@v2.8
         with:
           app_path: tests/packaged
           included_tags: ${{ matrix.tags }}