Bump assertj-core from 3.23.0 to 3.23.1 in /examples

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.23.0 to 3.23.1.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.23.0...assertj-core-3.23.1)

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

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

examples/jacoco/sub-a/build.gradle

@@ -4,7 +4,7 @@ apply plugin: "jacoco"
 dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.2'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.2'
-    testImplementation 'org.assertj:assertj-core:3.23.0'
+    testImplementation 'org.assertj:assertj-core:3.23.1'
 }
 
 test {

examples/jacoco/sub-b/build.gradle

@@ -6,7 +6,7 @@ dependencies {
 
     testImplementation('org.junit.jupiter:junit-jupiter-api:5.8.2')
     testRuntimeOnly('org.junit.jupiter:junit-jupiter-engine:5.8.2')
-    testImplementation('org.assertj:assertj-core:3.23.0')
+    testImplementation('org.assertj:assertj-core:3.23.1')
 }
 
 test {