Upgrade: bump actions/upload-artifact from 2 to 3

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2...v3)

---
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/integration.yml

@@ -25,7 +25,7 @@ jobs:
  - name: Copy .ini files
  run: cp targets.ini rbls.ini ./dist/dnsbl_exporter_linux_amd64_v1
  - name: Upload artifact
- uses: actions/upload-artifact@v2
+ uses: actions/upload-artifact@v3
  with:
  name: dnsbl_exporter
  path: dist/dnsbl_exporter_linux_amd64_v1