Fixed unsafe dictionary accesses in the update_integration_instance_config_value

[CraigBryan]

Fixed unsafe lookup of externalId, pollingIntervalCronExpression, and ingestionSourcesOverrides

[CraigBryan]

I was trying to use this function to update the custom tags for a google_cloud integration and got a series of errors due to some unsafe lookups in the dictionary.

Examples:

> j1.update_integration_instance_config_value(instance_id="<integration id>", config_key="@tag", config_value={'AccountName': 'Value', "JiraProject": "Value"})

File ~/.pyenv/versions/3.12.4/envs/gcp_sa_project_mapping/lib/python3.12/site-packages/jupiterone/client.py:717, in JupiterOneClient.update_integration_instance_config_value(self, instance_id, config_key, config_value)
    714 instance_config['data']['integrationInstance']['config'] = config_dict
    716 # remove externalId to not include in update payload
--> 717 del instance_config['data']['integrationInstance']['config']['externalId']
    719 # prepare variables GraphQL payload for updating config
    720 instance_details = instance_config['data']['integrationInstance']

KeyError: 'externalId'

> j1.update_integration_instance_config_value(instance_id="<integration id>", config_key="@tag", config_value={'AccountName': 'Value', "JiraProject": "Value"})
     30 variables = {
     31     "id": instance_details["id"],
     32     "update": {
   (...)
     44     },
     45 }
     47 # remove problem fields from previous response
---> 48 del variables["update"]["pollingIntervalCronExpression"]["__typename"]
     50 for ingestion_source in instance_details["ingestionSourcesOverrides"]:
     51     ingestion_source.pop(
     52         "__typename", None
     53     )  # Removes key if it exists, ignores if not

TypeError: 'NoneType' object does not support item deletion

[SeaBlooms]

Thanks @CraigBryan we will review and fix