[Automated] Update lang version to 2.0.0-alpha7-20210401-134600-b81b388b

ballerina-bot · ballerina-bot · commit 6cc1b0dea096 · 2021-04-01T18:25:17.000+05:30
diff --git a/gradle.properties b/gradle.properties
@@ -1,4 +1,4 @@
 org.gradle.caching=true
 group=org.ballerinalang
 version=0.7.0-alpha6-SNAPSHOT
-ballerinaLangVersion=2.0.0-alpha7-20210330-142200-4ca98160
+ballerinaLangVersion=2.0.0-alpha7-20210401-134600-b81b388b
