Increases timeout for layer implementation

[henrytseng]

What does this PR do?

This increases the timeout necessary for the MacroFunction to process installing the Datadog Lambda layer to instrument Lambda functions.

Motivation

Default looks like it was 3 seconds and triggering a timeout and rollback which prevented deployment of our Stack.

Testing Guidelines

Manual regression

Additional Notes

Related to issue with support team #1310259

Types of changes

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

Check all that apply

• [x] This PR's description is comprehensive
• [ ] This PR contains breaking changes that are documented in the description
• [x] 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