chore(deps): update dependency io.vertx:vertx-web-client to v3.8.4 (#1860)
chore(deps): update dependency io.vertx:vertx-web-client to v3.8.4 (#1860)


GoogleCloudPlatform/java-docs-samples,GoogleCloudPlatform/java-docs-samples,GoogleCloudPlatform/java-docs-samples,GoogleCloudPlatform/java-docs-samples,GoogleCloudPlatform/java-docs-samples,GoogleCloudPlatform/java-docs-samples