upgrade okhttp library version to latest

build.gradle

@@ -277,7 +277,7 @@ subprojects {
       dependency 'com.ibm.icu:icu4j:3.4.4'
       dependency 'com.microsoft.sqlserver:mssql-jdbc:7.4.1.jre11'
       dependency 'com.oracle.database.jdbc:ojdbc8:19.3.0.0'
-      dependencySet(group: 'com.squareup.okhttp3', version: '3.14.7') {
+      dependencySet(group: 'com.squareup.okhttp3', version: '4.9.0') {
         entry 'okhttp'
         entry 'mockwebserver'
       }