chore: regenerate client table in README (#10755)

Author: yoshi-code-bot

README.md

@@ -125,6 +125,7 @@ Libraries are available on GitHub and Maven Central for developing Java applicat
 | [Workspace Add-ons API](https://github.com/googleapis/google-cloud-java/tree/main/java-gsuite-addons) | [![stable][stable-stability]][stable-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-gsuite-addons.svg)](https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:google-cloud-gsuite-addons&core=gav) |
 | [reCAPTCHA Enterprise](https://github.com/googleapis/google-cloud-java/tree/main/java-recaptchaenterprise) | [![stable][stable-stability]][stable-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-recaptchaenterprise.svg)](https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:google-cloud-recaptchaenterprise&core=gav) |
 | [API Keys API](https://github.com/googleapis/google-cloud-java/tree/main/java-apikeys) | [![preview][preview-stability]][preview-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-apikeys.svg)](https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:google-cloud-apikeys&core=gav) |
+| [Ad Manager API](https://github.com/googleapis/google-cloud-java/tree/main/java-admanager) | [![preview][preview-stability]][preview-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.api-ads/ad-manager.svg)](https://search.maven.org/search?q=g:com.google.api-ads%20AND%20a:ad-manager&core=gav) |
 | [Address Validation API](https://github.com/googleapis/google-cloud-java/tree/main/java-maps-addressvalidation) | [![preview][preview-stability]][preview-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.maps/google-maps-addressvalidation.svg)](https://search.maven.org/search?q=g:com.google.maps%20AND%20a:google-maps-addressvalidation&core=gav) |
 | [Advisory Notifications API](https://github.com/googleapis/google-cloud-java/tree/main/java-advisorynotifications) | [![preview][preview-stability]][preview-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-advisorynotifications.svg)](https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:google-cloud-advisorynotifications&core=gav) |
 | [AlloyDB](https://github.com/googleapis/google-cloud-java/tree/main/java-alloydb) | [![preview][preview-stability]][preview-description] | [![Maven](https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-alloydb.svg)](https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:google-cloud-alloydb&core=gav) |