feat: undici fetch in watch (#399)

## Description

Change node-fetch for undici fetch and native stream. This is a POC to
determine whether we get better results before changing the whole
node-fetch library out.

_Soak results report 0 watch misses over 6 hours and 45 mins (3 soaks)_

Definition of done:
- [x] Sustains memory in UDS Core 
- [x] Does not miss events in [soak test
](https://github.com/defenseunicorns/pepr/actions/runs/11669014019/job/32490105424)
- [x] still can run `npx pepr dev`


![image](https://github.com/user-attachments/assets/1f040486-4369-47c4-afb3-4c5815af527f)


![image](https://github.com/user-attachments/assets/bce98f4b-edaf-44d3-bd45-c2960608ef63)

## Related Issue

defenseunicorns/pepr#1180

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)

## Checklist before merging

- [x] Test, docs, adr added or updated as needed
- [x] [Contributor Guide
Steps](https://docs.pepr.dev/main/contribute/#submitting-a-pull-request)
followed

---------

Signed-off-by: Case Wylie <[email protected]>

package.json

@@ -44,6 +44,7 @@
     "node-fetch": "2.7.0",
     "quicktype-core": "23.0.170",
     "type-fest": "4.26.1",
+    "undici": "6.20.1",
     "yargs": "17.7.2"
   },
   "devDependencies": {