v5.2.0

DiffEqProblemLibrary v5.2.0

Diff since v5.1.1

Merged pull requests:

• Bump Aqua to 0.8 in all sublibraries (#170) (@ChrisRackauckas-Claude)
• Add ExplicitImports.jl tests for import hygiene (#171) (@ChrisRackauckas-Claude)
• Performance: Fix allocation in p23_f! (Chandrasekhar function) - 76x speedup (#173) (@ChrisRackauckas-Claude)
• Bump version to 5.2.0 (#174) (@ChrisRackauckas-Claude)