Bump io.weaviate:client from 5.3.0 to 5.4.0 in /modules/weaviate

Bumps [io.weaviate:client](https://github.com/weaviate/java-client) from 5.3.0 to 5.4.0.
- [Release notes](https://github.com/weaviate/java-client/releases)
- [Commits](weaviate/java-client@5.3.0...5.4.0)

---
updated-dependencies:
- dependency-name: io.weaviate:client
  dependency-version: 5.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

modules/weaviate/build.gradle

@@ -4,5 +4,5 @@ dependencies {
     api project(':testcontainers')
 
     testImplementation 'org.assertj:assertj-core:3.27.3'
-    testImplementation 'io.weaviate:client:5.3.0'
+    testImplementation 'io.weaviate:client:5.4.0'
 }