v7.31.1

Symbolics v7.31.1

Diff since v7.31.0

Merged pull requests:

• Fix integral equality with symbolic interval bounds (#1922) (@ChrisRackauckas-Claude)
• ci: test ModelingToolkitBase RegressionI downstream (#1923) (@ChrisRackauckas-Claude)
• Update Project.toml (#1925) (@ChrisRackauckas)