build(deps-dev): Bump vertx.version in /vertx/feign-vertx4-test

Bumps `vertx.version` from 4.5.25 to 4.5.26.

Updates `io.vertx:vertx-junit5` from 4.5.25 to 4.5.26
- [Commits](eclipse-vertx/vertx-junit5@4.5.25...4.5.26)

Updates `io.vertx:vertx-web-client` from 4.5.25 to 4.5.26
- [Commits](vert-x3/vertx-web@4.5.25...4.5.26)

---
updated-dependencies:
- dependency-name: io.vertx:vertx-junit5
  dependency-version: 4.5.26
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: io.vertx:vertx-web-client
  dependency-version: 4.5.26
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

vertx/feign-vertx4-test/pom.xml

@@ -30,7 +30,7 @@
   <description>Tests with Vertx 4.x.</description>
 
   <properties>
-    <vertx.version>4.5.25</vertx.version>
+    <vertx.version>4.5.26</vertx.version>
   </properties>
 
   <dependencies>