build(deps): bump @sideway/formula from 3.0.0 to 3.0.1 in /example

Bumps [@sideway/formula](https://github.com/sideway/formula) from 3.0.0 to 3.0.1.
- [Release notes](https://github.com/sideway/formula/releases)
- [Commits](hapijs/formula@v3.0.0...v3.0.1)

---
updated-dependencies:
- dependency-name: "@sideway/formula"
  dependency-type: indirect
...

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

example/yarn.lock

@@ -1148,8 +1148,8 @@
     "@hapi/hoek" "^9.0.0"
 
 "@sideway/formula@^3.0.0":
-  version "3.0.0"
-  resolved "https://registry.npmjs.org/@sideway/formula/-/formula-3.0.0.tgz"
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@sideway/formula/-/formula-3.0.1.tgz#80fcbcbaf7ce031e0ef2dd29b1bfc7c3f583611f"
 
 "@sideway/pinpoint@^2.0.0":
   version "2.0.0"