Bump ryand56/r2-upload-action from 1.3.4 to 1.4

Bumps [ryand56/r2-upload-action](https://github.com/ryand56/r2-upload-action) from 1.3.4 to 1.4.
- [Release notes](https://github.com/ryand56/r2-upload-action/releases)
- [Commits](ryand56/r2-upload-action@v1.3.4...v1.4)

---
updated-dependencies:
- dependency-name: ryand56/r2-upload-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/update-latest.yml

@@ -26,7 +26,7 @@ jobs:
               '.builds[].ota.path |= $version + "/" + . | (.builds[].parts // [])[].path |= $version + "/" + .' \
               manifest.json > output/manifest.json
       - name: Upload updated manifest to R2
-        uses: ryand56/r2-upload-action@v1.3.4
+        uses: ryand56/[email protected]
         with:
           r2-account-id: ${{ secrets.CLOUDFLARE_R2_ACCOUNT_ID }}
           r2-access-key-id: ${{ secrets.CLOUDFLARE_R2_ACCESS_KEY_ID }}