build(deps): Bump submodules/falcosecurity-rules

Bumps [submodules/falcosecurity-rules](https://github.com/falcosecurity/rules) from `2ac430b` to `c39d31a`.
- [Release notes](https://github.com/falcosecurity/rules/releases)
- [Commits](falcosecurity/rules@2ac430b...c39d31a)

---
updated-dependencies:
- dependency-name: submodules/falcosecurity-rules
  dependency-type: direct:production
...

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