docs(lambda): add note on potential errors when updating lambda functions

[evzzk]

Issue # (if applicable)

Closes #.

Reason for this change

When you update multiple aspects of a Lambda function by modifying an aws-cdk-lib.aws-lambda L2 construct and deploying in a single CDK deployment, you may encounter a short period of time where errors occur due to all aspects not being updated together.

Description of changes

Add documentation in aws-cdk-lib.aws-lambda to explain this potential situation.

Describe any new or updated permissions being added

None

Description of how you validated changes

None. Only updated README.md

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.44%. Comparing base (8c1be1e) to head (fd44efc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #32838   +/-   ##
=======================================
  Coverage   81.44%   81.44%           
=======================================
  Files         225      225           
  Lines       13702    13702           
  Branches     2404     2404           
=======================================
  Hits        11160    11160           
  Misses       2267     2267           
  Partials      275      275           

Flag	Coverage Δ
suite.unit	81.44% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	80.81% <ø> (ø)
packages/aws-cdk-lib/core	82.10% <ø> (ø)

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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[moelasmar]

@Mergifyio refresh

[mergify]

refresh

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Pull request has been modified.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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This pull request has been removed from the queue for the following reason: pull request dequeued.

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[aws-cdk-automation]

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• Commit ID: fd44efc
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