Build(deps): Bump jfrog/artifactory-oss

Bumps jfrog/artifactory-oss from 7.71.5 to 7.71.8.

---
updated-dependencies:
- dependency-name: jfrog/artifactory-oss
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/ArtifactoryContainer/Dockerfile

@@ -1 +1 @@
-FROM docker.bintray.io/jfrog/artifactory-oss:7.71.5
+FROM docker.bintray.io/jfrog/artifactory-oss:7.71.8