Add Oracle to db list in gradle.properties

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Author: tsegismont

gradle.properties

@@ -25,7 +25,7 @@ org.gradle.java.installations.auto-download=false
 #docker = true
 
 # The database type to use (key insensitive and support aliases):
-# Db2, MySql, PostgreSQL, CockroachDB, SqlServer
+# Db2, MySql, PostgreSQL, CockroachDB, SqlServer, Oracle
 #db = MSSQL
 
 # Enable the SonatypeOS maven repository (mainly for Vert.x snapshots) when present (value ignored)