[cd] Bump CIRCT from firtool-1.61.0 to firtool-1.81.1

[github-actions]

[cd] Bump CIRCT from firtool-1.61.0 to firtool-1.81.1

This is an automated commit generated by the circt/update-circt GitHub
Action.

There were no commits that were cherry-picked from the ci/ci-circt-nightly branch.

Release Notes

Bump CIRCT from firtool-1.61.0 to firtool-1.81.1.

Release notes for new CIRCT versions can be found at the following links:

• ESIRuntime-0.0.10
• ESIRuntime-0.0.2
• ESIRuntime-0.0.3
• ESIRuntime-0.0.4
• ESIRuntime-0.0.5
• ESIRuntime-0.0.6
• ESIRuntime-0.0.7
• ESIRuntime-0.0.8
• ESIRuntime-0.0.9
• firtool-1.61.0
• firtool-1.62.0
• firtool-1.63.0
• firtool-1.64.0
• firtool-1.65.0
• firtool-1.66.0
• firtool-1.67.0
• firtool-1.67.1
• firtool-1.68.0
• firtool-1.69.0
• firtool-1.70.0
• firtool-1.71.0
• firtool-1.72.0
• firtool-1.73.0
• firtool-1.74.0
• firtool-1.75.0
• firtool-1.76.0
• firtool-1.77.0
• firtool-1.78.0
• firtool-1.78.1
• firtool-1.79.0
• firtool-1.80.0
• firtool-1.80.1
• firtool-1.81.0
• firtool-1.81.1
• pycde-0.4.0
• pycde-0.5.0
• pycde-0.5.1