Use kotlin-bom to ensure consistent versions; bump okio.version and k…

…otlin.version, too

pom.xml

@@ -184,7 +184,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
     <disruptor.version>3.4.2</disruptor.version>
     <reload4j.version>1.2.22</reload4j.version>
 
-    <kotlin.version>1.6.21</kotlin.version>
+    <kotlin.version>1.9.21</kotlin.version>
     <metainf-services.version>1.8</metainf-services.version>
     <picocli.version>4.7.5</picocli.version>
     <prometheus.version>0.7.0</prometheus.version>
@@ -217,7 +217,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
 
     <objenesis.version>1.0</objenesis.version>
     <okhttp.version>2.7.5</okhttp.version>
-    <okio.version>3.4.0</okio.version>
+    <okio.version>3.6.0</okio.version>
     <mockito1-powermock.version>1.10.19</mockito1-powermock.version>
     <mockito2.version>3.5.9</mockito2.version>
     <hamcrest.version>1.3</hamcrest.version>
@@ -1388,13 +1388,10 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
       </dependency>
       <dependency>
         <groupId>org.jetbrains.kotlin</groupId>
-        <artifactId>kotlin-stdlib</artifactId>
-        <version>${kotlin.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>org.jetbrains.kotlin</groupId>
-        <artifactId>kotlin-stdlib-common</artifactId>
+        <artifactId>kotlin-bom</artifactId>
         <version>${kotlin.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
       </dependency>
       <dependency>
         <groupId>io.opentracing</groupId>