chore(deps): update dependency @google-cloud/functions-framework to v4

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
@google-cloud/functions-framework	^3.0.0 -> ^4.0.0

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Release Notes

GoogleCloudPlatform/functions-framework-nodejs (@​google-cloud/functions-framework)

v4.0.1

Compare Source

Bug Fixes

• add release-assets.githubusercontent.com to allowed domains (#​713) (4cd1b2b)
• update microsoft/api-extractor to 7.55.0 (#​712) (8e565c8)

v4.0.0

Compare Source

⚠ BREAKING CHANGES

• upgrade all dependencies
• delete the undocumented "typed" function signature
• drop support for old nodejs versions

Bug Fixes

• delete the undocumented "typed" function signature (c0714e7)

Miscellaneous Chores

• drop support for old nodejs versions (c0714e7)
• upgrade all dependencies (c0714e7)

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