Update dependency com.vanniktech:gradle-maven-publish-plugin to v0.28.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.vanniktech:gradle-maven-publish-plugin	0.27.0 -> 0.28.0

---

Release Notes

vanniktech/gradle-maven-publish-plugin (com.vanniktech:gradle-maven-publish-plugin)

v0.28.0

Compare Source

• Added support for publishing through the new Central Portal. To use
  this use the CENTRAL_PORTAL option when specifying the Sonatype host.
• For Kotlin Multiplatform the main plugin will now automatically publish the
  release variant if the project has an Android target and no variant was explicitly
  specified through the Kotlin Gradle DSL.
• Support specifying the Android variants to publish in KotlinMultiplatform(...).
• Updated minimum supported Gradle, Android Gradle Plugin and Kotlin versions.
• Removed support for the deprecated Kotlin/JS plugin.
• Removed the deprecated closeAndReleaseRepository task. Use releaseRepository, which
  is functionally equivalent, instead.

Minimum supported versions

• JDK 11
• Gradle 8.1
• Android Gradle Plugin 8.0.0
• Kotlin Gradle Plugin 1.9.20

Compatibility tested up to

• JDK 21
• Gradle 8.6
• Gradle 8.7-rc-3
• Android Gradle Plugin 8.3.0
• Android Gradle Plugin 8.4.0-alpha13
• Kotlin Gradle Plugin 1.9.23
• Kotlin Gradle Plugin 2.0.0-Beta4

Configuration cache status

Configuration cache is generally supported, except for:

• Publishing releases to Maven Central (snapshots are fine), blocked by Gradle issue #​22779.
• Dokka does not support configuration cache

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

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

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.