Bump openpgp from 4.10.10 to 5.0.1 in /src

Bumps [openpgp](https://github.com/openpgpjs/openpgpjs) from 4.10.10 to 5.0.1.
- [Release notes](https://github.com/openpgpjs/openpgpjs/releases)
- [Commits](openpgpjs/openpgpjs@v4.10.10...v5.0.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/package-lock.json

@@ -17,7 +17,7 @@
     "express": "~4.17.1",
     "express-winston": "^4.2.0",
     "fs.promises": "^0.1.2",
-    "openpgp": "^4.10.10",
+    "openpgp": "^5.0.1",
     "winston": "^3.3.3"
   },
   "devDependencies": {