Bump org.assertj:assertj-core from 3.27.5 to 3.27.6

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.27.5 to 3.27.6.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.27.5...assertj-build-3.27.6)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-version: 3.27.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/dependencies.gradle

@@ -6,7 +6,7 @@ ext {
 dependencies {
   implementation group: 'org.apache.pdfbox', name: 'pdfbox', version: '3.0.5', transitive: true
   implementation group: 'org.hamcrest', name: 'hamcrest', version: '3.0', transitive: false
-  implementation group: 'org.assertj', name: 'assertj-core', version: '3.27.5'
+  implementation group: 'org.assertj', name: 'assertj-core', version: '3.27.6'
   testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
   testImplementation "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
   testImplementation "org.junit.platform:junit-platform-engine:$junitPlatformVersion"