Bump httpcore-nio from 4.4.15 to 4.4.16 in /examples

Bumps httpcore-nio from 4.4.15 to 4.4.16.

---
updated-dependencies:
- dependency-name: org.apache.httpcomponents:httpcore-nio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

examples/aspectj/httpcore-nio/build.gradle

@@ -2,7 +2,7 @@ apply plugin: "java"
 apply plugin: "io.freefair.aspectj"
 
 dependencies {
-    inpath 'org.apache.httpcomponents:httpcore-nio:4.4.15'
+    inpath 'org.apache.httpcomponents:httpcore-nio:4.4.16'
     implementation "org.aspectj:aspectjrt:1.9.9.1"
 
     testImplementation 'junit:junit:4.13.2'