Bump java-client from 2.7.12 to 2.7.13 in /modules/couchbase (#2397)

Bumps [java-client](https://github.com/couchbase/couchbase-java-client) from 2.7.12 to 2.7.13.
- [Release notes](https://github.com/couchbase/couchbase-java-client/releases)
- [Commits](couchbase/couchbase-java-client@2.7.12...2.7.13)

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

modules/couchbase/build.gradle

@@ -2,7 +2,7 @@ description = "Testcontainers :: Couchbase"
 
 dependencies {
     compile project(':testcontainers')
-    compile 'com.couchbase.client:java-client:2.7.12'
+    compile 'com.couchbase.client:java-client:2.7.13'
 
     testCompile project(':test-support')
 }