Bump firrtl from `48da140` to `d69daef` (#134)

Bumps [firrtl](https://github.com/freechipsproject/firrtl) from `48da140` to `d69daef`.
- [Release notes](https://github.com/freechipsproject/firrtl/releases)
- [Commits](https://github.com/freechipsproject/firrtl/compare/48da140b23c010acd81f759a81d4694e7308caf2...d69daef3e18ce8ad175f0220fae0be95a46d25fd

)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>