Advance Kotlin version used in build to 1.7

Also update kotlinx-metadata-jvm used in kotlin-reflect build to 0.4.1
in order to support reading Kotlin 1.7 metadata version.

build.gradle.kts

@@ -62,7 +62,7 @@ val kotlinVersion by extra(
         } ?: buildNumber
 )
 
-val kotlinLanguageVersion by extra("1.6")
+val kotlinLanguageVersion by extra("1.7")
 
 allprojects {
     group = "org.jetbrains.kotlin"

gradle/verification-metadata.xml

@@ -7023,6 +7023,12 @@
             <sha256 value="0047c18edd9be7b097da27208341174c9826b098105621b901d4a4dbdd53d59d" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="org.jetbrains.kotlinx" name="kotlinx-metadata-jvm" version="0.4.1">
+         <artifact name="kotlinx-metadata-jvm-0.4.1.jar">
+            <md5 value="f0d120f9d44a9c3c85ba0fc0683faa33" origin="Generated by Gradle"/>
+            <sha256 value="f0707adf62ffd4b09ec5a21d8c4b95f546ab971fe678fa9305ad2e3bfa218bd4" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="org.jetbrains.kotlinx" name="kotlinx-metadata-klib" version="0.0.1-dev-10">
          <artifact name="kotlinx-metadata-klib-0.0.1-dev-10.jar">
             <md5 value="eb72c22727bdbd6abf8649703c82ba68" origin="Generated by Gradle"/>

libraries/reflect/build.gradle.kts

@@ -12,7 +12,7 @@ description = "Kotlin Full Reflection Library"
 
 buildscript {
     dependencies {
-        classpath("org.jetbrains.kotlinx:kotlinx-metadata-jvm:0.3.0")
+        classpath("org.jetbrains.kotlinx:kotlinx-metadata-jvm:0.4.1")
     }
 }
 

libraries/tools/binary-compatibility-validator/build.gradle

@@ -7,6 +7,7 @@ configurations {
 
 dependencies {
     api("org.jetbrains.kotlinx:binary-compatibility-validator:0.7.1")
+    api("org.jetbrains.kotlinx:kotlinx-metadata-jvm:0.4.1")
 
     testApi project(':kotlin-test:kotlin-test-junit')