chore(deps): update oxsecurity/megalinter action to v6.15.0 (#538)

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

.github/workflows/lint.yaml

@@ -26,7 +26,7 @@ jobs:
           fetch-depth: 0
 
       - name: MegaLinter
-        uses: oxsecurity/megalinter@v6.14.0
+        uses: oxsecurity/megalinter@v6.15.0
         env:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
           VALIDATE_ALL_CODEBASE: ${{ github.event_name == 'workflow_dispatch' }}