Bump org.neo4j.driver:neo4j-java-driver in /examples

Bumps [org.neo4j.driver:neo4j-java-driver](https://github.com/neo4j/neo4j-java-driver) from 4.4.18 to 4.4.20.
- [Release notes](https://github.com/neo4j/neo4j-java-driver/releases)
- [Commits](neo4j/neo4j-java-driver@4.4.18...4.4.20)

---
updated-dependencies:
- dependency-name: org.neo4j.driver:neo4j-java-driver
  dependency-version: 4.4.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

examples/neo4j-container/build.gradle

@@ -8,7 +8,7 @@ repositories {
 
 dependencies {
     testImplementation 'org.assertj:assertj-core:3.26.3'
-    testImplementation 'org.neo4j.driver:neo4j-java-driver:4.4.18'
+    testImplementation 'org.neo4j.driver:neo4j-java-driver:4.4.20'
     testImplementation 'org.testcontainers:neo4j'
     testImplementation 'org.testcontainers:junit-jupiter'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.13.3'