Bump jedis from 4.1.1 to 4.2.1 in /examples

Bumps [jedis](https://github.com/redis/jedis) from 4.1.1 to 4.2.1.
- [Release notes](https://github.com/redis/jedis/releases)
- [Commits](redis/jedis@v4.1.1...v4.2.1)

---
updated-dependencies:
- dependency-name: redis.clients:jedis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

examples/redis-backed-cache-testng/build.gradle

@@ -8,7 +8,7 @@ repositories {
 
 dependencies {
     compileOnly 'org.slf4j:slf4j-api:1.7.32'
-    implementation 'redis.clients:jedis:4.1.1'
+    implementation 'redis.clients:jedis:4.2.1'
     implementation 'com.google.code.gson:gson:2.8.9'
     implementation 'com.google.guava:guava:23.0'
     testImplementation 'org.testcontainers:testcontainers'

examples/redis-backed-cache/build.gradle

@@ -8,7 +8,7 @@ repositories {
 
 dependencies {
     compileOnly 'org.slf4j:slf4j-api:1.7.32'
-    implementation 'redis.clients:jedis:4.1.1'
+    implementation 'redis.clients:jedis:4.2.1'
     implementation 'com.google.code.gson:gson:2.8.9'
     implementation 'com.google.guava:guava:23.0'
     testImplementation 'org.testcontainers:testcontainers'

examples/singleton-container/build.gradle

@@ -8,7 +8,7 @@ repositories {
 
 dependencies {
 
-    implementation 'redis.clients:jedis:4.1.1'
+    implementation 'redis.clients:jedis:4.2.1'
     implementation 'com.google.code.gson:gson:2.8.9'
     implementation 'com.google.guava:guava:23.0'
     compileOnly 'org.slf4j:slf4j-api:1.7.32'