Bump java-client from 3.2.5 to 3.2.6 in /modules/couchbase

Bumps [java-client](https://github.com/couchbase/couchbase-jvm-clients) from 3.2.5 to 3.2.6.
- [Release notes](https://github.com/couchbase/couchbase-jvm-clients/releases)
- [Commits](couchbase/couchbase-jvm-clients@java-client-3.2.5...java-client-3.2.6)

---
updated-dependencies:
- dependency-name: com.couchbase.client:java-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

modules/couchbase/build.gradle

@@ -5,6 +5,6 @@ dependencies {
     // TODO use JDK's HTTP client and/or Apache HttpClient5
     shaded 'com.squareup.okhttp3:okhttp:3.14.9'
 
-    testImplementation 'com.couchbase.client:java-client:3.2.5'
+    testImplementation 'com.couchbase.client:java-client:3.2.6'
     testImplementation 'org.awaitility:awaitility:4.1.1'
 }