IAM-825: upgrade openfga to latest v1.5.2

[shipperizer]

IAM-825: bump openfga to latest version

checks

• [x] verified working juju deployment

shipperizer in ~/shipperizer/canonical-identity-platform-docs on main ● λ juju status
Model  Controller          Cloud/Region        Version  SLA          Timestamp
test   microk8s-localhost  microk8s/localhost  3.1.7    unsupported  12:39:31+02:00

App             Version  Status  Scale  Charm           Channel    Rev  Address        Exposed  Message
openfga-k8s              active      1  openfga-k8s                  0  10.152.183.92  no       
postgresql-k8s  14.10    active      1  postgresql-k8s  14/stable  193  10.152.183.48  no       Primary

Unit               Workload  Agent  Address       Ports  Message
openfga-k8s/0*     active    idle   10.1.245.136         
postgresql-k8s/0*  active    idle   10.1.245.185         Primary

• [x] verified correct functioning of the API

  shipperizer in ~/shipperizer/canonical-identity-platform-docs on main ● λ fga --api-token WbBpztl6pkhiwjtftaudPOMZEP2u5RlmT7Q_yL8C4QA --api-url http://127.0.0.1:8080 store create --name admin
  {
  "store": {
  "created_at":"2024-04-08T10:39:05.198445Z",
  "id":"01HTYMMHFDTBCFS5XS79D5PXZG",
  "name":"admin",
  "updated_at":"2024-04-08T10:39:05.198445Z"
  }
  }
  shipperizer in ~/shipperizer/canonical-identity-platform-docs on main ● λ fga --api-token WbBpztl6pkhiwjtftaudPOMZEP2u5RlmT7Q_yL8C4QA --api-url http://127.0.0.1:8080 store list               
  {
  "continuation_token":"",
  "stores": [
  {
    "created_at":"2024-04-08T10:38:40.321283Z",
    "id":"01HTYMKS5Z7G3HS4RG2NJHD5R4",
    "name":"admin",
    "updated_at":"2024-04-08T10:38:40.321283Z"
  },
  {
    "created_at":"2024-04-08T10:39:05.198445Z",
    "id":"01HTYMMHFDTBCFS5XS79D5PXZG",
    "name":"admin",
    "updated_at":"2024-04-08T10:39:05.198445Z"
  }
  ]
  }