Update kotlin to 1.5.0 and gradle to 7.0 (#3)

### What's done:
* Updated kotlin from 1.4.32 to 1.5.0
* Updated gradle from 6.8.3 to 7.0
* Updated jacoco from 0.8.6 to 0.8.7

build.gradle.kts

@@ -3,7 +3,7 @@ import io.github.petertrr.configureVersioning
 import org.jetbrains.kotlin.gradle.targets.jvm.tasks.KotlinJvmTest
 
 plugins {
-    kotlin("multiplatform") version "1.4.31"
+    kotlin("multiplatform") version "1.5.0"
     jacoco
     id("com.github.ben-manes.versions") version "0.38.0"
 }
@@ -59,7 +59,7 @@ tasks.withType<KotlinJvmTest> {
 
 // configure Jacoco-based code coverage reports for JVM tests executions
 jacoco {
-    toolVersion = "0.8.6"
+    toolVersion = "0.8.7"
 }
 val jvmTestTask by tasks.named<KotlinJvmTest>("jvmTest") {
     configure<JacocoTaskExtension> {
@@ -77,4 +77,4 @@ val jacocoTestReportTask by tasks.register<JacocoReport>("jacocoTestReport") {
     }
 }
 jvmTestTask.finalizedBy(jacocoTestReportTask)
-jacocoTestReportTask.dependsOn(jvmTestTask)
+jacocoTestReportTask.dependsOn(jvmTestTask)

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists