chore(deps): update launchdarkly/gh-actions digest to 8220ae5 (#1259)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[launchdarkly/gh-actions](https://redirect.github.com/launchdarkly/gh-actions)
| action | digest | `a210a81` → `8220ae5` |

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Low risk: this only updates the pinned commit digest for a GitHub
Action used in CI dependency scanning, with no production code changes.
> 
> **Overview**
> Updates `.github/workflows/dependency-scan.yml` to pin
`launchdarkly/gh-actions` dependency-scan actions (`generate-sbom` and
`evaluate-policy`) to a new commit digest (`a210a81` → `8220ae5`).
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
fce3205. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/dependency-scan.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Generate SBOM
-        uses: launchdarkly/gh-actions/actions/dependency-scan/generate-sbom@a210a815330938287c6816ab44b54684996afd0b # main
+        uses: launchdarkly/gh-actions/actions/dependency-scan/generate-sbom@8220ae5b6e56f7108d076da0e710dc4feca15101 # main
         with:
           types: 'nodejs'
 
@@ -25,6 +25,6 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Evaluate SBOM Policy
-        uses: launchdarkly/gh-actions/actions/dependency-scan/evaluate-policy@a210a815330938287c6816ab44b54684996afd0b # main
+        uses: launchdarkly/gh-actions/actions/dependency-scan/evaluate-policy@8220ae5b6e56f7108d076da0e710dc4feca15101 # main
         with:
           artifacts-pattern: bom-*