update version (#82)

diff --git a/flink-doris-connector/pom.xml b/flink-doris-connector/pom.xml
index bde8d37..4e98842 100644
--- a/flink-doris-connector/pom.xml
+++ b/flink-doris-connector/pom.xml
@@ -62,9 +62,9 @@
         </mailingList>
     </mailingLists>
     <properties>
-        <scala.version>2.12</scala.version>
-        <flink.version>1.14.4</flink.version>
-        <flink.minor.version>1.14</flink.minor.version>
+        <scala.version>${env.scala.version}</scala.version>
+        <flink.version>${env.flink.version}</flink.version>
+        <flink.minor.version>${env.flink.minor.version}</flink.minor.version>
         <libthrift.version>0.13.0</libthrift.version>
         <arrow.version>5.0.0</arrow.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>