Move dependencies to stable versions

gradle.properties

@@ -1,7 +1,7 @@
 org.gradle.caching=true
 group=io.ballerina.stdlib
 version=1.12.0-SNAPSHOT
-ballerinaLangVersion=2201.11.0-20250127-101700-a4b67fe5
+ballerinaLangVersion=2201.11.0
 
 checkstylePluginVersion=10.12.0
 spotbugsPluginVersion=6.0.18
@@ -19,9 +19,9 @@ marshallingVersion=2.0.5.Final
 protobufVersion=3.25.5
 
 # Dependencies
-stdlibIoVersion=1.7.0-20250127-170200-0d36f73
-stdlibLogVersion=2.11.0-20250131-134300-052ff7f
-stdlibCryptoVersion=2.8.0-20250127-170800-6c52ac3
-stdlibTimeVersion=2.6.0-20250127-170200-86bdc5a
-observeVersion=1.4.0-20250130-102700-e04cefe
-observeInternalVersion=1.4.0-20250131-133200-4dfa090
+stdlibIoVersion=1.7.0
+stdlibLogVersion=2.11.0
+stdlibCryptoVersion=2.8.0
+stdlibTimeVersion=2.6.0
+observeVersion=1.4.0
+observeInternalVersion=1.4.0