Update vendir https://github.com/cloudfoundry/uaa to v78

Author: renovate[bot]

terraform-modules/concourse/app/files/vendir.lock.yml

@@ -8,10 +8,10 @@ directories:
   path: config/credhub/_ytt_lib/credhub
 - contents:
   - git:
-      commitTitle: fix more request errors (#3528)
-      sha: cb4422c09b737d09776ffb1cee7019a459006285
+      commitTitle: 'Merge pull request #3762 from fhanik/pr/fix-saml-and-invitations-beans...'
+      sha: 26389733e0b3d5fc5a2e5ba4915c6f612f5d9cd5
       tags:
-      - v77.35.0
+      - v78.9.0
     path: .
   path: config/uaa/_ytt_lib/uaa
 kind: LockConfig

terraform-modules/concourse/app/files/vendir.yml

@@ -16,7 +16,7 @@ directories:
   - path: .
     git:
       url: https://github.com/cloudfoundry/uaa
-      ref: v77.35.0
+      ref: v78.9.0
     includePaths:
     - k8s/templates/**/*
 # START delete when https://github.com/vmware-tanzu/carvel-secretgen-controller/issues/70 is fixed