Bump smallrye-mutiny-vertx-core from 2.20.0 to 2.21.0

Bumps smallrye-mutiny-vertx-core from 2.20.0 to 2.21.0.

---
updated-dependencies:
- dependency-name: io.smallrye.reactive:smallrye-mutiny-vertx-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

chapter-5/reactive-programming-examples/pom.xml

@@ -18,7 +18,7 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
         <mutiny.version>1.4.0</mutiny.version>
-        <mutiny-vertx.version>2.20.0</mutiny-vertx.version>
+        <mutiny-vertx.version>2.21.0</mutiny-vertx.version>
     </properties>
 
     <dependencies>

chapter-7/mutiny-examples/pom.xml

@@ -18,7 +18,7 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
         <mutiny.version>1.4.0</mutiny.version>
-        <mutiny-vertx.version>2.20.0</mutiny-vertx.version>
+        <mutiny-vertx.version>2.21.0</mutiny-vertx.version>
     </properties>
 
     <dependencies>