build(deps): bump theupdateframework/tuf-conformance

Bumps the action-dependencies group with 1 update: [theupdateframework/tuf-conformance](https://github.com/theupdateframework/tuf-conformance).


Updates `theupdateframework/tuf-conformance` from 2.0.0 to 2.1.0
- [Release notes](https://github.com/theupdateframework/tuf-conformance/releases)
- [Commits](theupdateframework/tuf-conformance@f4acd16...ad0e8be)

---
updated-dependencies:
- dependency-name: theupdateframework/tuf-conformance
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: action-dependencies
...

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

.github/workflows/conformance.yml

@@ -17,6 +17,6 @@ jobs:
         uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
 
       - name: Run test suite
-        uses: theupdateframework/tuf-conformance@f4acd16d0ea49a6fd5cc4558084b578c6fc7d6cd # v2.0.0
+        uses: theupdateframework/tuf-conformance@ad0e8bef1a9a1c7af993c3d56376ce624a0f10f2 # v2.1.0
         with:
           entrypoint: ".github/scripts/conformance-client.py"