Update dropbox requirement from <12.0,>=11.28.0 to >=11.28.0,<13.0

Updates the requirements on [dropbox](https://github.com/dropbox/dropbox-sdk-python) to permit the latest version.
- [Release notes](https://github.com/dropbox/dropbox-sdk-python/releases)
- [Commits](dropbox/dropbox-sdk-python@v11.28.0...v12.0.0)

---
updated-dependencies:
- dependency-name: dropbox
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -26,7 +26,7 @@ requires-python = ">=3.8"
 dependencies = [
     "click>=8.0.2",
     "desktop-notifier>=3.3.0",
-    "dropbox>=11.28.0,<12.0",
+    "dropbox>=11.28.0,<13.0",
     "fasteners>=0.15",
     "keyring>=22",
     "keyrings.alt>=3.1.0",