v0.18.4

New release of steward-core controller images & helm chart.

Here you find the changelog.

• Run controller image: stewardci/stewardci-run-controller:0.18.4
• Tenant controller image: stewardci/stewardci-tenant-controller:0.18.4
• Helm chart: 0.18.4

List of closed pull-requests since last release
#313: Merge release 0.18.3 into master
#314: Update some packages due to vulnerabilities

Changes
v0.18.3...v0.18.4