Update openapitools/openapi-generator-cli Docker tag from v7.19.0 to v7.20.0 (Dockerfile.integration-tests-debian)

Author: renovate[bot]

Dockerfile.integration-tests-debian

@@ -1,7 +1,7 @@
 
 # code: language=Dockerfile
 
-FROM openapitools/openapi-generator-cli:v7.19.0@sha256:b9e7ad71a9f9406bd810378a939755fad114747a767e29bbf83ef9364d5f9dc0 AS openapitools
+FROM openapitools/openapi-generator-cli:v7.20.0@sha256:fa4add01856e44becf70674164df354d61bd37ba0f444d27be949801e013921b AS openapitools
 # currently only supports x64, no arm yet due to chrome and selenium dependencies
 FROM python:3.13.12-slim-trixie@sha256:3de9a8d7aedbb7984dc18f2dff178a7850f16c1ae7c34ba9d7ecc23d0755e35f AS build
 WORKDIR /app