test: updated artifact retention (#1435)

## Description

Updates artifact retention period.

## Related Issue

Relates to #1431

## Type of change

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

## Checklist before merging
- [x] Unit,
[Journey](https://github.com/defenseunicorns/pepr/tree/main/journey),
[E2E Tests](https://github.com/defenseunicorns/pepr-excellent-examples),
[docs](https://github.com/defenseunicorns/pepr/tree/main/docs),
[adr](https://github.com/defenseunicorns/pepr/tree/main/adr) added or
updated as needed
- [x] [Contributor Guide
Steps](https://docs.pepr.dev/main/contribute/#submitting-a-pull-request)
followed

.github/workflows/load.yml

@@ -56,15 +56,15 @@ jobs:
           name: tgz
           path: pepr-0.0.0-development.tgz
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: upload pepr controller image artifact (.tar)
         uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
           name: tar
           path: pepr-dev.tar
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: "load.cli.ts cluster up"
         run: |
@@ -92,15 +92,15 @@ jobs:
           name: actress.log
           path: load/*-actress.log
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: upload raw test sample log (audience)
         uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
           name: audience.log
           path: load/*-audience.log
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: "load.cli.ts post"
         run: |
@@ -113,23 +113,23 @@ jobs:
           name: actress.json
           path: load/*-actress.json
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: upload parsed sample log (audience)
         uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
           name: audience.json
           path: load/*-audience.json
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: upload load test summary
         uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
           name: summary.json
           path: load/*-summary.json
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30
 
       - name: "load.cli.ts graph"
         run: |
@@ -142,4 +142,4 @@ jobs:
           name: watcher.png
           path: load/*.png
           if-no-files-found: error
-          retention-days: 1
+          retention-days: 30