Bump org.assertj:assertj-core from 3.27.6 to 3.27.7

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.27.6 to 3.27.7.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.27.6...assertj-build-3.27.7)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-version: 3.27.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -25,7 +25,7 @@ dependencies {
 
     testImplementation("org.junit.jupiter:junit-jupiter-api:6.0.2")
     testImplementation("org.apache.flink:flink-test-utils:$flinkVersion")
-    testImplementation("org.assertj:assertj-core:3.27.6")
+    testImplementation("org.assertj:assertj-core:3.27.7")
     testImplementation("org.mockito:mockito-junit-jupiter:5.21.0")
 
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
@@ -41,7 +41,7 @@ testing {
         configureEach {
             if (this is JvmTestSuite) {
                 dependencies {
-                    implementation("org.assertj:assertj-core:3.27.6")
+                    implementation("org.assertj:assertj-core:3.27.7")
                 }
             }
         }