Bump com.oracle.database.jdbc:ojdbc11 in /modules/oracle-free

Bumps com.oracle.database.jdbc:ojdbc11 from 23.5.0.24.07 to 23.8.0.25.04.

---
updated-dependencies:
- dependency-name: com.oracle.database.jdbc:ojdbc11
  dependency-version: 23.8.0.25.04
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

modules/oracle-free/build.gradle

@@ -7,7 +7,7 @@ dependencies {
     compileOnly 'com.oracle.database.r2dbc:oracle-r2dbc:1.2.0'
 
     testImplementation project(':jdbc-test')
-    testImplementation 'com.oracle.database.jdbc:ojdbc11:23.5.0.24.07'
+    testImplementation 'com.oracle.database.jdbc:ojdbc11:23.8.0.25.04'
 
     compileOnly 'org.jetbrains:annotations:26.0.2'