📦 Update dependency esbuild to v0.21.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
esbuild	0.21.1 -> 0.21.2

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How to resolve breaking changes

This PR may introduce breaking changes that require manual intervention. In such cases, you will need to check out this branch, fix the cause of the breakage, and commit the fix to ensure a green CI build. To check out and update this PR, follow the steps below:

# Check out the PR branch
git checkout -b renovate/esbuild-devdependencies main
git pull https://github.com/ampproject/amphtml.git renovate/esbuild-devdependencies

# Directly make fixes and commit them
amp lint --fix # For lint errors in JS files
amp prettify --fix # For prettier errors in non-JS files
# Edit source code in case of new compiler warnings / errors

# Push the changes to the branch
git push git@github.com:ampproject/amphtml.git renovate/esbuild-devdependencies:renovate/esbuild-devdependencies

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Release Notes

evanw/esbuild (esbuild)

v0.21.2

Compare Source

• Correct this in field and accessor decorators (#​3761)

  This release changes the value of this in initializers for class field and accessor decorators from the module-level this value to the appropriate this value for the decorated element (either the class or the instance). It was previously incorrect due to lack of test coverage. Here's an example of a decorator that doesn't work without this change:

  const dec = () => function() { this.bar = true }
  class Foo { @​dec static foo }
  console.log(Foo.bar) // Should be "true"

• Allow es2023 as a target environment (#​3762)

  TypeScript recently added es2023 as a compilation target, so esbuild now supports this too. There is no difference between a target of es2022 and es2023 as far as esbuild is concerned since the 2023 edition of JavaScript doesn't introduce any new syntax features.

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Configuration

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