Add ObjectInputStream.readObject to forbidden apis (#10952)

Add ObjectInputStream.readObject to forbidden apis

Co-authored-by: dougqh <dougqh@gmail.com>

Removing unnecessary defaultmessage added by AI

Adding URL to relevant documentation

Merge branch 'master' into dd/prevent-objectinputstream-deserialization

Merge branch 'master' into dd/prevent-objectinputstream-deserialization

Co-authored-by: datadog-datadog-prod-us1[bot] <88084959+datadog-datadog-prod-us1[bot]@users.noreply.github.com>
Co-authored-by: devflow.devflow-routing-intake <devflow.devflow-routing-intake@kubernetes.us1.ddbuild.io>

Author: 3 people