Bump io.opentelemetry.instrumentation:gradle-plugins from 2.19.0-alpha to 2.21.0-alpha#4514

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dependabot/gradle/io.opentelemetry.instrumentation-gradle-plugins-2.21.0-alphamicrosoft/ApplicationInsights-Java:dependabot/gradle/io.opentelemetry.instrumentation-gradle-plugins-2.21.0-alphaCopy head branch name to clipboard