Allow to choose Deno version on Deno Deploy

### What problem are you trying to solve?

It seems that Deno 1.46 introduced some changes to how `file://` URLs are handled, which has caused some projects using deno_blog on slightly older versions to not run on Deno Deploy unless the dependencies are updated in accordance with the latest version.

### Describe the solution you'd like

My suggestions are as follows:

- Ability to choose the Deno version in the deploy dashboard: It would be helpful to have the option to select from previous X versions of Deno. If any of my projects are using a version that will no longer be available in the near future, I would appreciate an email notifying me to upgrade.

- It could also be a field in `deno.jsonc` that deploy can read automatically, instead of having to configure this via the UI for each project.

### Describe alternatives you've considered

Searched the documentation to see if it was already available or not.

### Documentation, Adoption, Migration Strategy

_No response_