build(deps): bump aws-sdk in /apps/OpenSignServer

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.1687.0 to 2.1691.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.1687.0...v2.1691.0)

---
updated-dependencies:
- dependency-name: aws-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

apps/OpenSignServer/package.json

@@ -24,7 +24,7 @@
     "@signpdf/placeholder-pdf-lib": "^3.2.4",
     "@signpdf/signer-p12": "^3.2.4",
     "@signpdf/signpdf": "^3.2.4",
-    "aws-sdk": "^2.1687.0",
+    "aws-sdk": "^2.1691.0",
     "axios": "^1.7.7",
     "cors": "^2.8.5",
     "dotenv": "^16.4.5",