build: bump jvm from 1.6.21 to 1.8.10

Bumps [jvm](https://github.com/JetBrains/kotlin) from 1.6.21 to 1.8.10.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/commits)

---
updated-dependencies:
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -20,17 +20,13 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        # follows https://en.wikipedia.org/wiki/Java_version_history#Release_table
-        java-versions: ['8', '11', '17', '21']
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Java ${{ matrix.java-versions }}
+    - name: Set up JDK 11
       uses: actions/setup-java@v3
       with:
-        java-version: ${{ matrix.java-versions }}
+        java-version: '11'
         distribution: 'temurin'
     - name: Build with Gradle
       uses: gradle/gradle-build-action@fec4a42eb0c83154e5c9590748ba8337949c5701

build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
     // Apply the org.jetbrains.kotlin.jvm Plugin to add support for Kotlin.
-    kotlin("jvm") version "1.6.21"
+    kotlin("jvm") version "1.8.10"
     id("org.jetbrains.dokka") version "1.6.21"
 
     // Apply the java-library plugin for API and implementation separation.