build(deps): update testcontainers to 1.21.3, use oracle-free instead of oracle-xe

Author: geirsagberg

.gitignore

@@ -8,3 +8,4 @@ dependency-reduced-pom.xml
 .terraform
 terraform.tfstate*
 out/
+*.orig

db-scheduler/pom.xml

@@ -257,7 +257,7 @@
         </dependency>
         <dependency>
             <groupId>org.testcontainers</groupId>
-            <artifactId>oracle-xe</artifactId>
+            <artifactId>oracle-free</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>

db-scheduler/src/test/java/com/github/kagkarlsson/scheduler/compatibility/Oracle11gCompatibilityTest.java

@@ -13,14 +13,16 @@
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Tag;
-import org.testcontainers.containers.OracleContainer;
 import org.testcontainers.junit.jupiter.Container;
 import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.oracle.OracleContainer;
 
 @Tag("compatibility")
 @Testcontainers
 public class Oracle11gCompatibilityTest extends CompatibilityTest {
-  @Container private static final OracleContainer ORACLE = new OracleContainer("gvenzl/oracle-xe");
+  @Container
+  private static final OracleContainer ORACLE =
+      new OracleContainer("gvenzl/oracle-free:slim-faststart");
 
   private static HikariDataSource pooledDatasource;