chore(docs): bump dpop from 1.4.1 to 2.1.1 in /web-app

Bumps [dpop](https://github.com/panva/dpop) from 1.4.1 to 2.1.1.
- [Release notes](https://github.com/panva/dpop/releases)
- [Changelog](https://github.com/panva/dpop/blob/main/CHANGELOG.md)
- [Commits](panva/dpop@v1.4.1...v2.1.1)

---
updated-dependencies:
- dependency-name: dpop
  dependency-version: 2.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

web-app/package-lock.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "@opentdf/sdk": "file:../lib/opentdf-sdk-0.14.0.tgz",
     "clsx": "^2.1.1",
-    "dpop": "^1.4.1",
+    "dpop": "^2.1.1",
     "native-file-system-adapter": "^3.0.1",
     "react": "^19.0.0",
     "react-dom": "^19.2.4",