Bump vertx-web from 3.5.4 to 3.9.4 in /java-usecase-dependencies#6

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dependabot/maven/java-usecase-dependencies/io.vertx-vertx-web-3.9.4java-cases/java-usecase:dependabot/maven/java-usecase-dependencies/io.vertx-vertx-web-3.9.4Copy head branch name to clipboard