Move dependencies to stable version

gradle.properties

@@ -1,7 +1,7 @@
 org.gradle.caching=true
 group=org.ballerinalang
 version=1.0.5-SNAPSHOT
-ballerinaLangVersion=2.0.0-Preview6-SNAPSHOT
+ballerinaLangVersion=2.0.0-Preview6
 ballerinaTomlParserVersion=1.2.2
 ballerinaMessageBrokerVersion=0.970.0
 ballerinaMessageBrokerCoreVersion=0.970.5
@@ -15,20 +15,20 @@ wso2CommonsPoolVersion=1.5.6.wso2v1
 wso2CarbonMetricsVersion=2.3.7
 wso2SnakeYamlVersion=1.26.0.wso2v1
 
-stdlibHttpVersion=1.0.2-SNAPSHOT
-stdlibMimeVersion=1.0.2-SNAPSHOT
-stdlibAuthVersion=1.0.2-SNAPSHOT
-stdlibFileVersion=0.6.0-SNAPSHOT
-stdlibCacheVersion=2.0.2-SNAPSHOT
-stdlibCryptoVersion=1.0.2-SNAPSHOT
-stdlibEncodingVersion=1.0.4-SNAPSHOT
-stdlibTaskVersion=1.1.2-SNAPSHOT
-stdlibLogVersion=1.0.2-SNAPSHOT
-stdlibTimeVersion=1.0.3-SNAPSHOT
-stdlibReflectVersion=0.5.2-SNAPSHOT
-stdlibRuntimeApiVersion=0.5.2-SNAPSHOT
-stdlibSystemVersion=0.6.2-SNAPSHOT
-stdlibConfigApiVersion=1.0.2-SNAPSHOT
-stdlibIoVersion=0.5.2-SNAPSHOT
-stdlibStringutilsVersion=0.5.2-SNAPSHOT
+stdlibHttpVersion=1.0.2
+stdlibMimeVersion=1.0.2
+stdlibAuthVersion=1.0.2
+stdlibFileVersion=0.6.0
+stdlibCacheVersion=2.0.2
+stdlibCryptoVersion=1.0.2
+stdlibEncodingVersion=1.0.4
+stdlibTaskVersion=1.1.2
+stdlibLogVersion=1.0.2
+stdlibTimeVersion=1.0.3
+stdlibReflectVersion=0.5.2
+stdlibRuntimeApiVersion=0.5.2
+stdlibSystemVersion=0.6.2
+stdlibConfigApiVersion=1.0.2
+stdlibIoVersion=0.5.2
+stdlibStringutilsVersion=0.5.2