Increase allowed layer package size.

[purple4reina]

What does this PR do?

Motivation

ddtrace v3.12.0 brought us over the limit. We increased the limit to 23*1024 in serverless tools, we should do the same here.

Testing Guidelines

Additional Notes

Types of Changes

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

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