Mist Ball past_values update

[Z02X]

This PR adds the missing past_values entry for Mist Ball in the move_changelog.
Validated by building the database locally and confirming the endpoint resolves correctly.

How I tested:

• Build the database
• Run the server localy
• Queried Mist Ball (move/mist-ball) verified the past_values entry appears as expected:

"past_values": [
		{
				"accuracy": null,
				"power": 70,
				"pp": null,
				"effect_chance": null,
				"effect_entries": [],
				"type": null,
				"version_group": {
						"name": "scarlet-violet",
						"url": "http://127.0.0.1:8000/api/v2/version-group/25/"
				}
		}
]

[pokeapi-machine-user]

A PokeAPI/api-data refresh has started. In ~45 minutes the staging branch of PokeAPI/api-data will be pushed with the new generated data.

The staging branch will be deployed in our staging environment and the entire API will be ready to review.

A Pull Request (master<-staging) will be also created at PokeAPI/api-data and assigned to the PokeAPI Core team to be reviewed. If approved and merged new data will soon be available worldwide at pokeapi.co.

[pokeapi-machine-user]

The updater script has finished its job and has now opened a Pull Request towards PokeAPI/api-data with the updated data.

The Pull Request can be seen deployed in our staging environment when CircleCI deploy will be finished (check the start time of the last build).