Update kotlin monorepo to v2.4.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.jetbrains.kotlin:kotlin-stdlib-jdk8 (source)	2.4.10 → 2.4.20
org.jetbrains.kotlin:kotlin-serialization (source)	2.4.10 → 2.4.20
org.jetbrains.kotlin:kotlin-gradle-plugin (source)	2.4.10 → 2.4.20

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Configuration

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: build.gradle

Command failed: ./gradlew -Dorg.gradle.jvmargs=-Xms512m -Xmx512m --console=plain --dependency-verification lenient -q --write-verification-metadata sha256,pgp dependencies

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* What went wrong:
A problem occurred configuring project ':library'.
> Could not resolve all artifacts for configuration 'classpath'.
   > Could not resolve com.android.tools.build:gradle:9.4.0.
     Required by:
         buildscript of project ':library'
      > Repository Gradle Central Plugin Repository is disabled due to earlier error below:
         > Could not resolve com.android.tools.build:gradle:9.4.0.
            > Could not get resource 'https://plugins.gradle.org/m2/com/android/tools/build/gradle/9.4.0/gradle-9.4.0.pom'.
               > Could not GET 'https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/9.4.0/gradle-9.4.0.pom'. Received status code 429 from server: Too Many Requests
> There are 7 more failures with identical causes.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights from a Build Scan (powered by Develocity).
> Get more help at https://help.gradle.org.
==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
A problem occurred configuring project ':library'.
> Could not resolve all artifacts for configuration 'classpath'.
   > Could not resolve com.android.tools.build:gradle:9.4.0.
     Required by:
         buildscript of project ':library'
      > Repository Gradle Central Plugin Repository is disabled due to earlier error below:
         > Could not resolve com.android.tools.build:gradle:9.4.0.
            > Could not get resource 'https://plugins.gradle.org/m2/com/android/tools/build/gradle/9.4.0/gradle-9.4.0.pom'.
               > Could not GET 'https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/9.4.0/gradle-9.4.0.pom'. Received status code 429 from server: Too Many Requests
> There are 7 more failures with identical causes.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights from a Build Scan (powered by Develocity).
> Get more help at https://help.gradle.org.
==============================================================================

BUILD FAILED in 31s

[github-actions]

SpotBugs

Category	Base	New
Bad practice	31	31
Correctness	28	28
Dodgy code	13	13
Internationalization	6	6
Malicious code vulnerability	26	26
Multithreaded correctness	7	7
Performance	3	3
Security	3	3
Total	117	117