chore(deps): bump actions/upload-artifact from 3 to 4

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

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -75,7 +75,7 @@ jobs:
           echo "matrix=$json" >> $GITHUB_OUTPUT
 
       - name: upload packages
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: build
           path: build
@@ -143,7 +143,7 @@ jobs:
           SYNC_GITHUB_PASSWORD: ${{ secrets.SYNC_GITHUB_PASSWORD }}
           SYNC_GITHUB_USERNAME: ${{ secrets.SYNC_GITHUB_USERNAME }}
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: test-results-${{ matrix.index }}
           path: test-results
@@ -210,7 +210,7 @@ jobs:
             2) sudo -E make -e deploy-test-multi ;;
             3) sudo -E make -e deploy-test-go-fail-predeploy deploy-test-go-fail-postdeploy ;;
           esac
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: coverage.${{ matrix.index }}
           path: test-results/coverage

.github/workflows/release.yml

@@ -67,7 +67,7 @@ jobs:
         run: echo "version=$(cat build/next-version)" >> $GITHUB_OUTPUT
 
       - name: upload packages
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: build
           path: build
@@ -103,7 +103,7 @@ jobs:
           PKR_VAR_dokku_version="${VERSION:1}" make image/build/digitalocean
 
       - name: upload packages
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: digitalocean-manifest.json
           path: digitalocean-manifest.json