disable MSSQL from LOB stream tests

From the MS SQL Server documentation, it looks like JDBC4 drivers changed the behaviour.
"The next call to a getter method implicitly closes the stream".
Thus storing the InputStream in an entity will always result in a closed stream.
Since JDBC4 all drivers should behave that way actually.
And this is a sane way to prevent file handle leaks.

openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/jdbc/meta/strats/AbstractLobTest.java

@@ -51,8 +51,7 @@ public abstract class AbstractLobTest extends SingleEMFTestCase {
 
     protected List<Class<?>> supportedDatabases =
         new ArrayList<>
-            (Arrays.asList(MySQLDictionary.class, OracleDictionary.class, SQLServerDictionary.class,
-                    DB2Dictionary.class));
+            (Arrays.asList(MySQLDictionary.class, OracleDictionary.class, DB2Dictionary.class));
 
     @Override
     public void setUp() throws Exception {

pom.xml

@@ -79,7 +79,7 @@
         <mysql.connector.version>5.1.47</mysql.connector.version>
         <mariadb.connector.version>2.2.0</mariadb.connector.version>
         <postgresql.connector.version>42.2.5</postgresql.connector.version>
-        <mssql.connector.version>7.4.1.jre8</mssql.connector.version>
+        <mssql.connector.version>9.2.1.jre8</mssql.connector.version>
 
         <!-- other common versions -->
         <kubernetes-client.version>4.7.0</kubernetes-client.version>