Bump byte-buddy from 1.12.8 to 1.12.16

Bumps [byte-buddy](https://github.com/raphw/byte-buddy) from 1.12.8 to 1.12.16.
- [Release notes](https://github.com/raphw/byte-buddy/releases)
- [Changelog](https://github.com/raphw/byte-buddy/blob/master/release-notes.md)
- [Commits](https://github.com/raphw/byte-buddy/compare/byte-buddy-1.12.8...byte-buddy-1.12.16)

---
updated-dependencies:
- dependency-name: net.bytebuddy:byte-buddy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle

@@ -22,7 +22,7 @@ dependencies {
 
   // optional dependencies for using Spock
   testImplementation "org.hamcrest:hamcrest-core:2.2"   // only necessary if Hamcrest matchers are used
-  testRuntimeOnly 'net.bytebuddy:byte-buddy:1.12.8' // allows mocking of classes (in addition to interfaces)
+  testRuntimeOnly 'net.bytebuddy:byte-buddy:1.12.16' // allows mocking of classes (in addition to interfaces)
   testRuntimeOnly "org.objenesis:objenesis:3.3"      // allows mocking of classes without default constructor (together with ByteBuddy or CGLIB)
 
   // dependencies used by examples in this project