Prepare for calcite-1.38.2-looker release

Author: Anthrino

gradle.properties

@@ -26,7 +26,7 @@ systemProp.org.gradle.internal.publish.checksums.insecure=true
 # This is version for Calcite itself
 # Note: it should not include "-SNAPSHOT" as it is automatically added by build.gradle.kts
 # Release version can be generated by using -Prelease or -Prc=<int> arguments
-calcite.version=1.39.0
+calcite.version=1.38.2-looker
 # This is a version to be used from Maven repository. It can be overridden by localAvatica below
 calcite.avatica.version=1.25.0