chore(deps): update launchdarkly/gh-actions digest to 39e06a6 (#1800)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[launchdarkly/gh-actions](https://redirect.github.com/launchdarkly/gh-actions)
([changelog](https://redirect.github.com/launchdarkly/gh-actions/compare/68a2f042fe9eacad57a22de9843341cf6b946df8..39e06a6826b5f784225cc1e40077204d4306e22c))
| action | digest | `68a2f04` → `39e06a6` |

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View the [repository job
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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> CI-only pin bump for shared dependency-scan actions; no application
runtime or security logic in this repo changes.
> 
> **Overview**
> Updates the pinned **`launchdarkly/gh-actions`** digest from `68a2f04`
to `39e06a6` in **`.github/workflows/dependency-scan.yml`**.
> 
> Both the **Generate SBOM** and **Evaluate SBOM Policy** steps now
reference the new commit on `main`; install and checkout steps are
unchanged.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
b8c47fc. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

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

Author: renovate[bot]

.github/workflows/dependency-scan.yml

@@ -24,7 +24,7 @@ jobs:
           ELECTRON_SKIP_BINARY_DOWNLOAD: '1'
 
       - name: Generate SBOM
-        uses: launchdarkly/gh-actions/actions/dependency-scan/generate-sbom@68a2f042fe9eacad57a22de9843341cf6b946df8 # main
+        uses: launchdarkly/gh-actions/actions/dependency-scan/generate-sbom@39e06a6826b5f784225cc1e40077204d4306e22c # main
         with:
           types: 'nodejs'
           ensure-non-empty: 'true'
@@ -37,6 +37,6 @@ jobs:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
       - name: Evaluate SBOM Policy
-        uses: launchdarkly/gh-actions/actions/dependency-scan/evaluate-policy@68a2f042fe9eacad57a22de9843341cf6b946df8 # main
+        uses: launchdarkly/gh-actions/actions/dependency-scan/evaluate-policy@39e06a6826b5f784225cc1e40077204d4306e22c # main
         with:
           artifacts-pattern: bom-*