fix(deps): pin dependencies

This MR contains the following updates:

Package	Type	Update	Change
faker (changelog)	dev	pin	^39.0.0 → 39.0.0
requests-mock (source)	dev	pin	^1.12.1 → 1.12.1

Add the preset :preserveSemverRanges to your config if you don't want to pin your dependencies.

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