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 2.2.0 to 2.3.0
- [Release notes](https://github.com/theupdateframework/tuf-conformance/releases)
- [Commits](theupdateframework/tuf-conformance@dee4e23...9bfc222)

---
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]>

Author: dependabot[bot]

.github/workflows/conformance.yml

@@ -17,6 +17,6 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Run test suite
-        uses: theupdateframework/tuf-conformance@dee4e23533d7a12a6394d96b59b3ea0aa940f9bf # v2.2.0
+        uses: theupdateframework/tuf-conformance@9bfc222a371e30ad5511eb17449f68f855fb9d8f # v2.3.0
         with:
           entrypoint: ".github/scripts/conformance-client.py"