Bump @aws-sdk/client-lambda from 3.981.0 to 3.984.0

Bumps [@aws-sdk/client-lambda](https://github.com/aws/aws-sdk-js-v3/tree/HEAD/clients/client-lambda) from 3.981.0 to 3.984.0.
- [Release notes](https://github.com/aws/aws-sdk-js-v3/releases)
- [Changelog](https://github.com/aws/aws-sdk-js-v3/blob/main/clients/client-lambda/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js-v3/commits/v3.984.0/clients/client-lambda)

---
updated-dependencies:
- dependency-name: "@aws-sdk/client-lambda"
  dependency-version: 3.984.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -4,7 +4,7 @@
     "@aws-sdk/client-api-gateway": "^3.906.0",
     "@aws-sdk/client-dynamodb": "^3.981.0",
     "@aws-sdk/client-kinesis": "^3.964.0",
-    "@aws-sdk/client-lambda": "^3.965.0",
+    "@aws-sdk/client-lambda": "^3.986.0",
     "@aws-sdk/client-sns": "^3.955.0",
     "@aws-sdk/lib-dynamodb": "^3.858.0",
     "@nhsdigital/nhs-notify-event-schemas-letter-rendering": "^2.0.1",