fix(deps): update dependency io.codearte.gradle.nexus:gradle-nexus-staging-plugin to v0.30.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
io.codearte.gradle.nexus:gradle-nexus-staging-plugin	0.21.2 -> 0.30.0

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Release Notes

Codearte/gradle-nexus-staging-plugin (io.codearte.gradle.nexus:gradle-nexus-staging-plugin)

v0.30.0

• Replace from old unsupported HTTP Builder to OkHttp 4 - #​188 - PR by anuraaga
• Switch project development to maintenance mode - see below
• Switch build to Gradle 6.8.3
• Remove deprecated since 0.8.0 promoteRepository and closeAndPromoteRepository tasks

Backward compatibility note. Due to the internal HTTP client library change, the plugin might start behaving slightly different in certain situations.

PROJECT DEVELOPMENT SWITCHED TO THE MAINTENANCE MODE. To make releasing to Maven Central even easier, I and Marc Phillip (the author of nexus-publish-plugin) combined forces to create a next generation, unified 2-in-1 plugin - gradle-nexus-publish-plugin. It is a recommended solution, as our development effort will be put in that new plugin. See my blog post and the official migration guide.

Thank you for over 5 years of releasing with my plugin!

v0.22.0

• Change default retrying time to 5 minutes - a value recommended by Sonatype (suggestion by Mikhail Yakushin)
• Switch build to Gradle 6.6
• Bump some dependencies
• Check basic compatibility with Gradle up to 6.6
• CI server sanity check for Java 14 compatibility

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