chore: fix licenses

[duncanista]

What does this PR do?

Fixes our LICENSE-3rdparty.csv.

Motivation

#525

Testing Guidelines

n/a

Additional Notes

• There should be a license check when package.json is updated. Maybe we could leverage datadog-ci work on this.
• Didn't add @types/aws-sdk since no license could be found – plus it's deprecated.

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• This PR impacts documentation, and it has been updated (or a ticket has been logged)
• This PR's changes are covered by the automated tests
• This PR collects user input/sensitive content into Datadog
• This PR passes the integration tests (ask a Datadog member to run the tests)