build(deps): bump openpgp from 5.11.2 to 6.1.0

Bumps [openpgp](https://github.com/openpgpjs/openpgpjs) from 5.11.2 to 6.1.0.
- [Release notes](https://github.com/openpgpjs/openpgpjs/releases)
- [Commits](openpgpjs/openpgpjs@v5.11.2...v6.1.0)

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

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

package.json

@@ -30,7 +30,7 @@
     "jwk-thumbprint": "^0.1.4",
     "linkify-string": "^4.0.2",
     "linkifyjs": "^4.0.2",
-    "openpgp": "^5.11.2",
+    "openpgp": "^6.1.0",
     "register-service-worker": "^1.7.2",
     "sanitize-html": "^2.13.1",
     "smoothscroll-polyfill": "^0.4.4",