Bump com.ibm.db2:jcc from 12.1.2.0 to 12.1.3.0 in /modules/db2

Bumps com.ibm.db2:jcc from 12.1.2.0 to 12.1.3.0.

---
updated-dependencies:
- dependency-name: com.ibm.db2:jcc
  dependency-version: 12.1.3.0
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

modules/db2/build.gradle

@@ -4,5 +4,5 @@ dependencies {
     api project(':testcontainers-jdbc')
 
     testImplementation project(':testcontainers-jdbc-test')
-    testRuntimeOnly 'com.ibm.db2:jcc:12.1.2.0'
+    testRuntimeOnly 'com.ibm.db2:jcc:12.1.3.0'
 }