Merge branch '289832-add-deprecation-notice-for-ds-bundler-audit' into 'master'

Deprecate bundler-audit in Dependency Scanning doc

See merge request gitlab-org/gitlab!76408

doc/user/application_security/dependency_scanning/analyzers.md

@@ -32,6 +32,9 @@ to launch dedicated containers for each analysis.
 Dependency Scanning is pre-configured with a set of **default images** that are
 maintained by GitLab, but users can also integrate their own **custom images**.
 
+WARNING:
+The `bundler-audit` analyzer is deprecated and will be removed in GitLab 15.0 since it duplicates the functionality of the `gemnasium` analyzer. For more information, read the [deprecation announcement](../../../update/deprecations.md#deprecation-of-bundler-audit-dependency-scanning-tool).
+
 ## Official default analyzers
 
 Any custom change to the official analyzers can be achieved by using a