feat(ghost-upload): add update support, manual CI job, and dependency updates

ghost-upload/.gitlab-ci.yml

@@ -13,3 +13,17 @@ publish:
     - pages
   rules:
     - if: "$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH"
+
+publish_update:
+  stage: deploy
+  image: rust:latest
+  variables:
+    UPDATE_EXISTING: "true"
+  script:
+    - cd ./ghost-upload
+    - cargo run
+  needs:
+    - pages
+  rules:
+    - if: "$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH"
+      when: manual