Bump node-forge from 1.2.1 to 1.3.1 in /example

Bumps [node-forge](https://github.com/digitalbazaar/forge) from 1.2.1 to 1.3.1.
- [Release notes](https://github.com/digitalbazaar/forge/releases)
- [Changelog](https://github.com/digitalbazaar/forge/blob/main/CHANGELOG.md)
- [Commits](digitalbazaar/forge@v1.2.1...v1.3.1)

---
updated-dependencies:
- dependency-name: node-forge
  dependency-type: indirect
...

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

Author: dependabot[bot]

example/yarn.lock

@@ -1753,9 +1753,9 @@ node-fetch@~2.6.1:
     whatwg-url "^5.0.0"
 
 node-forge@^1.2.0:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-1.2.1.tgz#82794919071ef2eb5c509293325cec8afd0fd53c"
-  integrity sha512-Fcvtbb+zBcZXbTTVwqGA5W+MKBj56UjVRevvchv5XrcyXbmNdesfZL37nlcWOfpgHhgmxApw3tQbTr4CqNmX4w==
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-1.3.1.tgz#be8da2af243b2417d5f646a770663a92b7e9ded3"
+  integrity sha512-dPEtOeMvF9VMcYV/1Wb8CPoVAXtp6MKMlcbAt4ddqmGqUJ6fQZFXkNZNkNlfevtNkGtaSoXf/vNNNSvgrdXwtA==
 
 node-releases@^2.0.2:
   version "2.0.2"