Don't use Path.invariantSeparatorsPath in plugin #67

Gradle 7.2 and newer bundle a version of Kotlin where the experimental
Path.invariantSeparatorsPath is deprecated and made @InlineOnly.
Thus the invocation from the plugin resolves to a private method, leading to error.

Author: Abduqodiri Qurbonzoda

plugin/main/src/kotlinx/benchmark/gradle/Utils.kt

@@ -10,8 +10,6 @@ import java.io.File
 import java.nio.file.Path
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
-import kotlin.io.path.ExperimentalPathApi
-import kotlin.io.path.invariantSeparatorsPath
 
 fun cleanup(file: File) {
     if (file.exists()) {
@@ -93,8 +91,7 @@ fun Task.traceFormat(): String {
     return if (ideaActive) "xml" else "text"
 }
 
-@OptIn(ExperimentalPathApi::class)
-val Path.absolutePath: String get() = toAbsolutePath().invariantSeparatorsPath
+val Path.absolutePath: String get() = toAbsolutePath().toFile().invariantSeparatorsPath
 
 fun writeParameters(
     name: String,