Update prefect.yaml formatter schema

[discdiver]

First check

• [X] I added a descriptive title to this issue.
• [X] I used the GitHub search to find a similar request and didn't find it.
• [X] I searched the Prefect documentation for this feature.

Prefect Version

2.x

Describe the current behavior

Current schema is out of date

Describe the proposed behavior

Update @serinamarie's schema for recent prefect.yaml deployment changes at https://raw.githubusercontent.com/serinamarie/schemastore/add-prefect-dep-schema/src/schemas/json/prefect-deploy.json

Example Use

Steps to use

1. Install a yaml extension - I recommend RedHat’s YAML extension (Hit the install button on the linked page or search for it in the Extensions tab of left nav in VS Code)
2. Copy the schema Serina made into a file with a JSON extension (I’m putting mine into prefect-deploy.json in my hidden .vscode folder )
3. Update your settings.json in VSCode with the path to the file like this: "yaml.schemas": { "file:///Users/jeffhale/.vscode/prefect-deploy.json": "prefect.yaml", You can open your settings.json from VSCode with cmd + p and type settings.json.
4. Restart VS Code

Additional context

No response

[discdiver]

Requested by John Kang.

[johnkangw]

@discdiver Thanks!

[serinamarie]

This issue would requiring considering how we can keep the underlying schema updated in an automated way or it would quickly become outdated.