Bump org.gradle.wrapper-upgrade from 0.11.4 to 0.12

Bumps org.gradle.wrapper-upgrade from 0.11.4 to 0.12.

---
updated-dependencies:
- dependency-name: org.gradle.wrapper-upgrade
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -111,4 +111,4 @@ webauthn4j-core = 'com.webauthn4j:webauthn4j-core:0.28.3.RELEASE'
 
 [plugins]
 
-org-gradle-wrapper-upgrade = "org.gradle.wrapper-upgrade:0.11.4"
+org-gradle-wrapper-upgrade = "org.gradle.wrapper-upgrade:0.12"