Bump annotations from 21.0.1 to 23.1.0 in /examples

Bumps [annotations](https://github.com/JetBrains/java-annotations) from 21.0.1 to 23.1.0.
- [Release notes](https://github.com/JetBrains/java-annotations/releases)
- [Changelog](https://github.com/JetBrains/java-annotations/blob/master/CHANGELOG.md)
- [Commits](JetBrains/java-annotations@21.0.1...23.1.0)

---
updated-dependencies:
- dependency-name: org.jetbrains:annotations
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

examples/mongodb-container/build.gradle

@@ -9,5 +9,5 @@ repositories {
 dependencies {
     testImplementation 'org.testcontainers:testcontainers'
     testImplementation 'junit:junit:4.13.2'
-    testCompileClasspath 'org.jetbrains:annotations:21.0.1'
+    testCompileClasspath 'org.jetbrains:annotations:23.1.0'
 }