chore(deps): update kotlin monorepo to v1.9.20

[tradeshift-renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
org.jetbrains.kotlin:kotlin-maven-plugin (source)	build	patch	1.9.10 -> 1.9.20
org.jetbrains.kotlin:kotlin-stdlib (source)	compile	patch	1.9.10 -> 1.9.20

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