Update helm chart to use back-end image from dashboard repository

Closes #66, #88, and #71

See merge request stackspin/dashboard!56

Resolve "Merge dashboard and dashboard-backend repos"

Closes #1, #14, and #33

See merge request stackspin/dashboard!55

Merge remote branch 'dashboard-backend/move-everything-to-backend-folder' into 71-merge-dashboard-and-dashboard-backend-repos

Resolve "Release helm chart update"

Closes #85

See merge request stackspin/dashboard!54

Implement fetching apps from BE

Closes #77 and #82

See merge request stackspin/dashboard!53

Resolve "Add RBAC to the helm chart for k8s access from dashboard-backend"

Closes #81

See merge request stackspin/dashboard!52

Merge branch 'main' into 45-allow-database-to-have-external-apps

See https://stackoverflow.com/a/63873828