feat: Update getDntVersion function to support JSR registry URLs

[amyssnippet]

This PR updates the getDntVersion function in utils.ts to correctly extract version numbers from JSR URLs, as mentioned in the issue #481 , in addition to the existing Deno Land URLs. The regex has been modified to match both /dnt@version/ (legacy) and /@deno/dnt/version/ (JSR) patterns.

Previously, when dnt was imported from JSR, getDntVersion() would always return "dev" because the URL format wasn't recognized. Now it properly extracts the version (e.g., "1.2.3") from JSR URLs like https://jsr.io/@deno/dnt/1.2.3/mod.ts.

Testing:

• All existing tests pass
• New test validates JSR URL version extraction
• Full test suite runs successfully (except for unrelated yarn dependency test as i havent downloaded yarn, still if issues came up, i will check that too.)

[CLAassistant]

All committers have signed the CLA.

[amyssnippet]

@dsherret i have fixed the issue #484 . and thats only the regex issue, i have solved that. even after that some linting errors popped up, i solved by changing deno.jsonc file, and all errors were solved.

check my code updates from your side, if (any issue) then update me on that, else lets merge;

[amyssnippet]

after that issue, i have tried to solve the issue #454 too. you may check the updates, any recommendation, or updates, then let me know

[amyssnippet]

Hi @dsherret , following up on this.

I realized I bundled two distinct changes here: the JSR URL fix (#481 ) and the globalThis/shim options (#454 ).

If you prefer, I can strictly revert this PR to just the JSR fix and open a separate PR for the shim options to keep the history clean. Just let me know your preference!