MINOR: Update Scala to 2.13.5 (#10169)

This includes a fix from Chia-Ping that removes tuple
allocations when `Map.forKeyValue` is used
(scala/scala#9425) and support
for JDK 16.

Release notes:
https://github.com/scala/scala/releases/tag/v2.13.5

Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

bin/kafka-run-class.sh

@@ -48,7 +48,7 @@ should_include_file() {
 base_dir=$(dirname $0)/..
 
 if [ -z "$SCALA_VERSION" ]; then
-  SCALA_VERSION=2.13.4
+  SCALA_VERSION=2.13.5
   if [[ -f "$base_dir/gradle.properties" ]]; then
     SCALA_VERSION=`grep "^scalaVersion=" "$base_dir/gradle.properties" | cut -d= -f 2`
   fi

bin/windows/kafka-run-class.bat

@@ -27,7 +27,7 @@ set BASE_DIR=%CD%
 popd
 
 IF ["%SCALA_VERSION%"] EQU [""] (
-  set SCALA_VERSION=2.13.4
+  set SCALA_VERSION=2.13.5
 )
 
 IF ["%SCALA_BINARY_VERSION%"] EQU [""] (

gradle.properties

@@ -21,7 +21,7 @@ group=org.apache.kafka
 #  - tests/kafkatest/version.py (variable DEV_VERSION)
 #  - kafka-merge-pr.py
 version=2.8.0-SNAPSHOT
-scalaVersion=2.13.4
+scalaVersion=2.13.5
 task=build
 org.gradle.jvmargs=-Xmx2g -Xss4m -XX:+UseParallelGC
 org.gradle.parallel=true

gradle/dependencies.gradle

@@ -28,7 +28,7 @@ ext {
 
 // Add Scala version
 def defaultScala212Version = '2.12.13'
-def defaultScala213Version = '2.13.4'
+def defaultScala213Version = '2.13.5'
 if (hasProperty('scalaVersion')) {
   if (scalaVersion == '2.12') {
     versions["scala"] = defaultScala212Version