chore(appsec): regenerate openapi for trimmed Appsec doc comment

The generate-openapi make target pipes openapi-gen through '|| true', so
its failure is swallowed. Locally it had been failing to parse the Go
1.27 stdlib while the repo pins 1.26.7, which left zz_generated.openapi.go
holding the pre-trim Appsec description and broke the generate_code CI
job. Regenerated under the pinned toolchain.

Author: eliottness