upgrade version

Author: vincentlauvlwj

build.gradle

@@ -1,7 +1,7 @@
 
 buildscript {
     ext {
-        kotlinVersion = "1.4.10"
+        kotlinVersion = "1.4.21"
         detektVersion = "1.12.0-RC1"
     }
     repositories {
@@ -17,7 +17,7 @@ buildscript {
 
 allprojects {
     group = "org.ktorm"
-    version = "3.2.0"
+    version = "3.3.0"
 }
 
 subprojects { project ->

ktorm-global/src/main/kotlin/org/ktorm/global/Global.kt

@@ -33,10 +33,10 @@ import kotlin.contracts.InvocationKind
 import kotlin.contracts.contract
 
 @PublishedApi
-internal val lastConnected = AtomicReference<Database>()
+internal val lastConnected: AtomicReference<Database> = AtomicReference()
 
 @PublishedApi
-internal val threadLocal = ThreadLocal<Database>()
+internal val threadLocal: ThreadLocal<Database> = ThreadLocal()
 
 /**
  * The global database instance, Ktorm uses this property to obtain a database when any SQL is executed.