Bump actions/upload-artifact from 3 to 4 (#188)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/fresh-to-vercel-pr.yml

@@ -24,7 +24,7 @@ jobs:
             --baseURL https://hugo-fresh-${{ github.event.pull_request.head.user.login }}-${{ github.event.pull_request.head.ref }}.vercel.app
 
       - name: Save hugo as artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: hugo-output
           path: exampleSite/public/
@@ -35,7 +35,7 @@ jobs:
           echo hugo-fresh-${{ github.event.pull_request.head.user.login }}-${{ github.event.pull_request.head.ref }}.vercel.app > ./alias-domain/alias-domain
 
       - name: Save alias domain as artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: alias-domain
           path: alias-domain/

.github/workflows/htmltest.yml

@@ -40,7 +40,7 @@ jobs:
           path: exampleSite/public
 
       - name: Archive htmltest results
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: htmltest-report
           path: tmp/.htmltest/htmltest.log