chore(deps): bump bufbuild/buf-setup-action from 1.39.0 to 1.40.0 (#7256)

Bumps [bufbuild/buf-setup-action](https://github.com/bufbuild/buf-setup-action) from 1.39.0 to 1.40.0.
- [Release notes](https://github.com/bufbuild/buf-setup-action/releases)
- [Commits](bufbuild/buf-setup-action@v1.39.0...v1.40.0)

---
updated-dependencies:
- dependency-name: bufbuild/buf-setup-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/proto-registry.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: bufbuild/buf-setup-action@v1.39.0
+      - uses: bufbuild/buf-setup-action@v1.40.0
       - uses: bufbuild/buf-push-action@v1
         with:
           input: "proto"