Update mockk to v1.13.9

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.mockk:mockk-android (source)	1.13.8 -> 1.13.9
io.mockk:mockk-agent (source)	1.13.8 -> 1.13.9
io.mockk:mockk (source)	1.13.8 -> 1.13.9

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