fix(deps): update dependency org.openapi.generator:org.openapi.generator.gradle.plugin to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.openapi.generator:org.openapi.generator.gradle.plugin	6.6.0 -> 7.10.0

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[duhizjame]

this one is more critical than the quarkus one;
StorageProperties is a class defined by this:

StorageProperties:
  anyOf:
    - $ref: "#/components/schemas/S3Properties"
S3Properties:
  type: object
  properties:
    credentials:
      $ref: "#/components/schemas/SimpleAwsCredentials"
  required:
    - credentials

but in 7.2.0 StorageProperties are never created, only S3Properties are generated

same for a few more classes; should we stay with 6.6 or change the protocols to match?(one of the errors is on ListSchemasResponse which is a delta protocol schema) @tmnd1991

[tmnd1991]

I would stay on 6.x, also we need to find a way to customize a bit the generation of some stuff, since i don’t like the result we get right now