gitea: update and disable passwd login

Closes #11

gitea/application.yaml

@@ -122,7 +122,7 @@ spec:
         runAsNonRoot: true
       containers:
         - name: gitea
-          image: gitea/gitea:1.22.2-rootless
+          image: docker.gitea.com/gitea:1.23.7-rootless
           imagePullPolicy: IfNotPresent
           securityContext:
             readOnlyRootFilesystem: true
@@ -171,6 +171,8 @@ spec:
               value: "false"
             - name: GITEA__SECURITY__INSTALL_LOCK
               value: "true"
+            - name: GITEA__SERVICE__ENABLE_PASSWORD_SIGNIN_FORM
+              value: "false"
             - name: GITEA__SERVICE__REGISTER_EMAIL_CONFIRM
               value: "true"
             - name: GITEA__SERVICE__DISABLE_REGISTRATION