[SPARK-46592][DOCKER][TESTS][FOLLOWUP] Add newline to ORACLE Docker p…

…reparation sql

### What changes were proposed in this pull request?

`semicolon` is not able to break SQLs in a file into separated statements

### Why are the changes needed?

a followup for SPARK-46592

### Does this PR introduce _any_ user-facing change?

no

### How was this patch tested?

Check the Oracle docker log

####  Before

```
STDOUT: CONTAINER: running /docker-entrypoint-initdb.d/install.sql ...
STDOUT: ALTER SESSION SET DDL_LOCK_TIMEOUT = 30;ALTER USER SYSTEM IDENTIFIED BY "Th1s1sThe0racle#Pass"
STDOUT: *
STDOUT: ERROR at line 1:
STDOUT: ORA-00922: missing or invalid option
STDOUT: Help: https://docs.oracle.com/error-help/db/ora-00922/
```

#### After
```
STDOUT: CONTAINER: DONE: running /docker-entrypoint-initdb.d/install.sql

STDOUT: Session altered.

STDOUT: User altered.

```

### Was this patch authored or co-authored using generative AI tooling?

no

Closes #44609 from yaooqinn/SPARK-46592-F.

Authored-by: Kent Yao <yao@apache.org>
Signed-off-by: Max Gekk <max.gekk@gmail.com>

connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/OracleDatabaseOnDocker.scala

@@ -51,7 +51,7 @@ class OracleDatabaseOnDocker extends DatabaseOnDocker with Logging {
       // means that the lock will no wait. We set the timeout to 30 seconds to try again.
       // TODO: This workaround should be removed once the issue is fixed in the image.
       // https://github.com/gvenzl/oci-oracle-free/issues/35
-      writer.write("ALTER SESSION SET DDL_LOCK_TIMEOUT = 30;")
+      writer.write("ALTER SESSION SET DDL_LOCK_TIMEOUT = 30;\n")
       writer.write(s"""ALTER USER SYSTEM IDENTIFIED BY "$oracle_password";""")
       writer.close()
       val newBind = new Bind(