build(deps): bump docs/src/firmware-action-example

Bumps [docs/src/firmware-action-example](https://github.com/9elements/firmware-action-example) from `e3e5e73` to `2c9edbd`.
- [Commits](9elements/firmware-action-example@e3e5e73...2c9edbd)

---
updated-dependencies:
- dependency-name: docs/src/firmware-action-example
  dependency-type: direct:production
...

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