Bump com.adyen:adyen-java-api-library in /checkout-example-advanced

Bumps [com.adyen:adyen-java-api-library](https://github.com/adyen/adyen-java-api-library) from 29.1.0 to 40.0.0.
- [Release notes](https://github.com/adyen/adyen-java-api-library/releases)
- [Commits](Adyen/adyen-java-api-library@v29.1.0...v40.0.0)

---
updated-dependencies:
- dependency-name: com.adyen:adyen-java-api-library
  dependency-version: 40.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

checkout-example-advanced/build.gradle

@@ -18,7 +18,7 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect'
-    implementation 'com.adyen:adyen-java-api-library:29.1.0'
+    implementation 'com.adyen:adyen-java-api-library:40.0.0'
 
     developmentOnly 'org.springframework.boot:spring-boot-devtools'