Update benchmarks.yml

[Corvince]

This should fix benchmarks not working for the experimental grid cell PR

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
Schelling	small	🔵 -0.1% [-0.3%, +0.2%]	🔵 -0.4% [-0.6%, -0.3%]
Schelling	large	🔵 -1.4% [-2.9%, -0.1%]	🔵 -0.7% [-1.9%, +0.4%]
WolfSheep	small	🔵 -0.5% [-0.8%, -0.1%]	🔵 -0.2% [-0.3%, -0.0%]
WolfSheep	large	🔵 -1.5% [-2.3%, -0.8%]	🔵 -5.7% [-8.2%, -2.8%]
BoidFlockers	small	🔵 -1.0% [-1.5%, -0.6%]	🔵 +0.5% [-0.1%, +1.1%]
BoidFlockers	large	🔵 -0.8% [-1.5%, -0.2%]	🔵 +1.8% [+1.2%, +2.4%]

[rht]

I was about to ask if the Solara import could be made optional, but at this point it shouldn't matter because uv will turn pip install fast.