Bump org.assertj:assertj-core from 3.26.3 to 3.27.3

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.26.3 to 3.27.3.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.26.3...assertj-build-3.27.3)

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

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

htmlSanityCheck-maven-plugin/build.gradle

@@ -16,7 +16,7 @@ dependencies {
     implementation("org.apache.maven.plugin-tools:maven-plugin-annotations:${mavenPluginToolsVersion}")
 
     testImplementation libs.junit.jupiter
-    testImplementation 'org.assertj:assertj-core:3.26.3'
+    testImplementation 'org.assertj:assertj-core:3.27.3'
 
     testImplementation 'com.soebes.itf.jupiter.extension:itf-assertj:0.13.1'
     testImplementation 'com.soebes.itf.jupiter.extension:itf-jupiter-extension:0.13.1'