Upgrade: [dependabot] - bump @aws-sdk/client-secrets-manager

Bumps [@aws-sdk/client-secrets-manager](https://github.com/aws/aws-sdk-js-v3/tree/HEAD/clients/client-secrets-manager) from 3.716.0 to 3.721.0.
- [Release notes](https://github.com/aws/aws-sdk-js-v3/releases)
- [Changelog](https://github.com/aws/aws-sdk-js-v3/blob/main/clients/client-secrets-manager/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js-v3/commits/v3.721.0/clients/client-secrets-manager)

---
updated-dependencies:
- dependency-name: "@aws-sdk/client-secrets-manager"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

packages/certificateChecker/package.json

@@ -7,7 +7,7 @@
     "license": "MIT",
     "dependencies": {
         "@aws-sdk/client-cloudwatch-logs": "^3.716.0",
-        "@aws-sdk/client-secrets-manager": "^3.716.0",
+        "@aws-sdk/client-secrets-manager": "^3.721.0",
         "@middy/core": "^6.0.0",
         "@middy/input-output-logger": "^6.0.0"
     },

packages/proxygen/package.json

@@ -7,7 +7,7 @@
     "license": "MIT",
     "dependencies": {
         "@aws-sdk/client-cloudwatch-logs": "^3.716.0",
-        "@aws-sdk/client-secrets-manager": "^3.716.0",
+        "@aws-sdk/client-secrets-manager": "^3.721.0",
         "@middy/core": "^6.0.0",
         "@middy/input-output-logger": "^6.0.0",
         "axios": "^1.7.9",