feat(snowflake): support newer models with Snowflake provider

[sfc-gh-twhite]

Please explain the motivation behind the feature request.
The Snowflake provider only includes claude-3-5-sonnet and claude-3-7-sonnet by default. IIRC, those were the only completion models documented at the time with Chain of Thought with the Rest API when #2488 was merged.

goose/crates/goose/src/providers/snowflake.rs

Lines 18 to 19 in ccbf3f9

	pub const SNOWFLAKE_DEFAULT_MODEL: &str = "claude-3-7-sonnet";
	pub const SNOWFLAKE_KNOWN_MODELS: &[&str] = &["claude-3-7-sonnet", "claude-3-5-sonnet"];

Describe the solution you'd like
Add additional models from https://docs.snowflake.com/user-guide/snowflake-cortex/cortex-rest-api?source#model-availability and ensure they are working properly with goose.

Additional context

I'm happy to work on adding these and testing them.

• I have verified this does not duplicate an existing feature request

[ki3ani]

.take

[github-actions]

Thanks for taking this issue! Let us know if you have any questions!

[taniacryptid]

Hi @ki3ani - wanted to check on your progress with this issue and see if you needed any help :)

[ki3ani]

Hi @ki3ani - wanted to check on your progress with this issue and see if you needed any help :)

Hi @taniandjerry yes I'm working on it and a PR will be ready soon, I'll be sure to reach out if I need any assistance