fix: pom.xml & mockserver-examples/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-IONETTY-8707740

mockserver-examples/pom.xml

@@ -293,7 +293,7 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-webflux</artifactId>
             <!-- highest spring-boot-starter-webflux version is 2.x due to Java 1.8 version -->
-            <version>2.7.8</version>
+            <version>3.3.7</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.osgi</groupId>

pom.xml

@@ -57,7 +57,7 @@
         <slf4j.version>2.0.6</slf4j.version>
         <jackson.version>2.14.2</jackson.version>
         <velocity.version>2.3</velocity.version>
-        <netty.version>4.1.89.Final</netty.version>
+        <netty.version>4.1.118.Final</netty.version>
         <httpcomponents.version>4.4.1</httpcomponents.version>
         <bouncycastle.version>1.72</bouncycastle.version>
         <!-- highest spring version is 5.3 due to Java 1.8 version -->