migration from jreleaser to mavenPublish plugin (#277)

#152 

## Motivation and Context
To simplify publishing, use the [recommended
plugin](https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-publish-libraries.html#set-up-the-publishing-plugin)

## Breaking Changes
no

## Types of changes
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update

## Checklist
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

kotlin-sdk-server/build.gradle.kts

@@ -2,7 +2,6 @@ plugins {
     id("mcp.multiplatform")
     id("mcp.publishing")
     id("mcp.dokka")
-    id("mcp.jreleaser")
     alias(libs.plugins.kotlinx.binary.compatibility.validator)
 }