Bump gson from 2.8.6 to 2.8.7 in /examples

Bumps [gson](https://github.com/google/gson) from 2.8.6 to 2.8.7.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md)
- [Commits](google/gson@gson-parent-2.8.6...gson-parent-2.8.7)

---
updated-dependencies:
- dependency-name: com.google.code.gson:gson
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

examples/disque-job-queue/build.gradle

@@ -10,7 +10,7 @@ dependencies {
     compileOnly "org.projectlombok:lombok:1.18.20"
     annotationProcessor "org.projectlombok:lombok:1.18.20"
     implementation 'biz.paluch.redis:spinach:0.3'
-    implementation 'com.google.code.gson:gson:2.8.6'
+    implementation 'com.google.code.gson:gson:2.8.7'
     implementation 'com.google.guava:guava:23.0'
     testImplementation 'ch.qos.logback:logback-classic:1.2.3'
     testImplementation 'org.mockito:mockito-all:1.10.19'

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

@@ -9,7 +9,7 @@ repositories {
 dependencies {
     compileOnly 'org.slf4j:slf4j-api:1.7.30'
     implementation 'redis.clients:jedis:3.6.0'
-    implementation 'com.google.code.gson:gson:2.8.6'
+    implementation 'com.google.code.gson:gson:2.8.7'
     implementation 'com.google.guava:guava:23.0'
     testImplementation 'org.testcontainers:testcontainers'
     testImplementation 'ch.qos.logback:logback-classic:1.2.3'

examples/redis-backed-cache/build.gradle

@@ -9,7 +9,7 @@ repositories {
 dependencies {
     compileOnly 'org.slf4j:slf4j-api:1.7.30'
     implementation 'redis.clients:jedis:3.6.0'
-    implementation 'com.google.code.gson:gson:2.8.6'
+    implementation 'com.google.code.gson:gson:2.8.7'
     implementation 'com.google.guava:guava:23.0'
     testImplementation 'org.testcontainers:testcontainers'
     testImplementation 'junit:junit:4.13.2'

examples/singleton-container/build.gradle

@@ -9,7 +9,7 @@ repositories {
 dependencies {
 
     implementation 'redis.clients:jedis:3.6.0'
-    implementation 'com.google.code.gson:gson:2.8.6'
+    implementation 'com.google.code.gson:gson:2.8.7'
     implementation 'com.google.guava:guava:23.0'
     compileOnly 'org.slf4j:slf4j-api:1.7.30'